chore(deps): Bump libc from 0.2.186 to 0.2.188 (#567)

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.186 to 0.2.188.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/rust-lang/libc/releases">libc's
releases</a>.</em></p>
<blockquote>
<h2>0.2.188</h2>
<h3>Changed</h3>
<ul>
<li>Restore <code>Send</code> and <code>Sync</code> for <code>DIR</code>
(<a
href="https://github.com/rust-lang/libc/commit/35b062263401733cd89065c6a553640f2ba51ff1">35b062263401</a>)</li>
</ul>
<p>These were removed in 0.2.187 because <code>libc</code> does not
actually make <code>Send</code> and <code>Sync</code>
guarantees about <code>DIR</code> (or other extern types), but this
caused some crates to break.
The traits are added back for now to allow time to migrate, but will be
removed again
in the future; please make sure your crates are not relying on
<code>libc::DIR: Send</code> or
<code>libc::DIR: Sync</code>.</p>
<h2>0.2.187</h2>
<p>This release contains a number of improvements related to 64-bit
<code>time_t</code> configuration.
Of note the existing <code>RUST_LIBC_UNSTABLE_*</code> environment
variables have been replaced
with configuration options. The new way to use these is:</p>
<pre lang="sh"><code>RUSTFLAGS='--cfg=libc_unstable_musl_v1_2_3' cargo
...
RUSTFLAGS='--cfg=libc_unstable_gnu_time_bits=&quot;64&quot;' cargo ...
</code></pre>
<p>Being able to set this via <code>RUSTFLAGS</code> makes it easier to
only apply configuration to
specific targets (and notably, not the host if build scripts are
used).</p>
<p>There are two other notable changes:</p>
<ul>
<li>
<p>The 32-bit <code>windows-gnu</code> targets now respect
<code>libc_unstable_gnu_time_bits</code></p>
</li>
<li>
<p>uClibc now supports a similar configuration option:</p>
<pre lang="sh"><code>RUSTFLAGS='--cfg=libc_unstable_uclibc_time64'
</code></pre>
</li>
</ul>
<p>As a reminder, these options are under active development and may
change in the future
(hence the &quot;unstable&quot; in the name). It likely that we will
harmonize everything under a
single configuration option before considering them stable.</p>
<h3>Support</h3>
<ul>
<li>Add support for <code>aarch64-unknown-linux-pauthtest</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5065">#5065</a>)</li>
<li>Add support for new QNX targets (<a
href="https://redirect.github.com/rust-lang/libc/pull/5241">#5241</a>)</li>
<li>Better document breaking change policy and recommended usage (<a
href="https://redirect.github.com/rust-lang/libc/pull/5179">#5179</a>)</li>
</ul>
<h3>Added</h3>
<ul>
<li>Android: Add <code>POSIX_SPAWN_*</code> constants (<a
href="https://redirect.github.com/rust-lang/libc/pull/5104">#5104</a>)</li>
<li>Android: Add <code>getpwent</code>, <code>setpwent</code>, and
<code>endpwent</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5160">#5160</a>)</li>
<li>Android: Add <code>preadv2</code> and <code>pwritev2</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5157">#5157</a>)</li>
<li>Android: Add <code>seccomp_notif*</code> structures (<a
href="https://redirect.github.com/rust-lang/libc/pull/5224">#5224</a>)</li>
<li>Android: Add <code>timer_[create, delete, getoverrun, gettime,
settime]</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5108">#5108</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rust-lang/libc/blob/0.2.188/CHANGELOG.md">libc's
changelog</a>.</em></p>
<blockquote>
<h2><a
href="https://github.com/rust-lang/libc/compare/0.2.187...0.2.188">0.2.188</a>
- 2026-07-21</h2>
<h3>Changed</h3>
<ul>
<li>Restore <code>Send</code> and <code>Sync</code> for <code>DIR</code>
(<a
href="https://github.com/rust-lang/libc/commit/35b062263401733cd89065c6a553640f2ba51ff1">35b062263401</a>)</li>
</ul>
<p>These were removed in 0.2.187 because <code>libc</code> does not
actually make <code>Send</code> and <code>Sync</code>
guarantees about <code>DIR</code> (or other extern types), but this
caused some crates to break.
The traits are added back for now to allow time to migrate, but will be
removed again
in the future; please make sure your crates are not relying on
<code>libc::DIR: Send</code> or
<code>libc::DIR: Sync</code>.</p>
<h2><a
href="https://github.com/rust-lang/libc/compare/0.2.186...0.2.187">0.2.187</a>
- 2026-07-20</h2>
<p>This release contains a number of improvements related to 64-bit
<code>time_t</code> configuration.
Of note the existing <code>RUST_LIBC_UNSTABLE_*</code> environment
variables have been replaced
with configuration options. The new way to use these is:</p>
<pre lang="sh"><code>RUSTFLAGS='--cfg=libc_unstable_musl_v1_2_3' cargo
...
RUSTFLAGS='--cfg=libc_unstable_gnu_time_bits=&quot;64&quot;' cargo ...
</code></pre>
<p>Being able to set this via <code>RUSTFLAGS</code> makes it easier to
only apply configuration to
specific targets (and notably, not the host if build scripts are
used).</p>
<p>There are two other notable changes:</p>
<ul>
<li>
<p>The 32-bit <code>windows-gnu</code> targets now respect
<code>libc_unstable_gnu_time_bits</code></p>
</li>
<li>
<p>uClibc now supports a similar configuration option:</p>
<pre lang="sh"><code>RUSTFLAGS='--cfg=libc_unstable_uclibc_time64'
</code></pre>
</li>
</ul>
<p>As a reminder, these options are under active development and may
change in the future
(hence the &quot;unstable&quot; in the name). It likely that we will
harmonize everything under a
single configuration option before considering them stable.</p>
<h3>Support</h3>
<ul>
<li>Add support for <code>aarch64-unknown-linux-pauthtest</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5065">#5065</a>)</li>
<li>Add support for new QNX targets (<a
href="https://redirect.github.com/rust-lang/libc/pull/5241">#5241</a>)</li>
<li>Better document breaking change policy and recommended usage (<a
href="https://redirect.github.com/rust-lang/libc/pull/5179">#5179</a>)</li>
</ul>
<h3>Added</h3>
<ul>
<li>Android: Add <code>POSIX_SPAWN_*</code> constants (<a
href="https://redirect.github.com/rust-lang/libc/pull/5104">#5104</a>)</li>
<li>Android: Add <code>getpwent</code>, <code>setpwent</code>, and
<code>endpwent</code> (<a
href="https://redirect.github.com/rust-lang/libc/pull/5160">#5160</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rust-lang/libc/commit/7b7b771895c2a5ae75f358fadb893845ce9ae6cf"><code>7b7b771</code></a>
libc: Release 0.2.188</li>
<li><a
href="https://github.com/rust-lang/libc/commit/ba6a6b56ae09e0640a2b2e27f3f6abdb4b3d243f"><code>ba6a6b5</code></a>
[0.2] Restore <code>Send</code> and <code>Sync</code> for
<code>DIR</code></li>
<li><a
href="https://github.com/rust-lang/libc/commit/ee051902acd7ee674e1916e6b12297da3975b351"><code>ee05190</code></a>
libc: Release 0.2.187</li>
<li><a
href="https://github.com/rust-lang/libc/commit/13b22188be02a58d669661c7a177d48d62c7eef5"><code>13b2218</code></a>
unix: add preadv2 and pwritev2 to android</li>
<li><a
href="https://github.com/rust-lang/libc/commit/abc9903188c8454920295d5548cbeb4d7d5f4896"><code>abc9903</code></a>
docs: Improve the pull request template and CONTRIBUTING.md</li>
<li><a
href="https://github.com/rust-lang/libc/commit/c452b48fb208de60fc2788a4a0857de88d8ebece"><code>c452b48</code></a>
util: Restructure to use one class per subcommand</li>
<li><a
href="https://github.com/rust-lang/libc/commit/cbc70c94d25504059b8bd9ba559a20d234c61308"><code>cbc70c9</code></a>
nuttx: more document comments</li>
<li><a
href="https://github.com/rust-lang/libc/commit/2589ea31957596d3cd217e5b36d1ffe9ced9dd83"><code>2589ea3</code></a>
nuttx: add TCP_MAXSEG definitions</li>
<li><a
href="https://github.com/rust-lang/libc/commit/6be50c108554b169a254326f457c1839142fb007"><code>6be50c1</code></a>
nuttx: add pipe2 definitions</li>
<li><a
href="https://github.com/rust-lang/libc/commit/450034486a93a673e4f108ed7a09ebbdac4e3597"><code>4500344</code></a>
nuttx: add poll definitions</li>
<li>Additional commits viewable in <a
href="https://github.com/rust-lang/libc/compare/0.2.186...0.2.188">compare
view</a></li>
</ul>
</details>
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Cargo.lock

@@ -68,9 +68,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.186"
+version = "0.2.188"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
+checksum = "22053b6a34f84abc97f9129e61334f40174659a1b9bd18c970b83db6a9a6348b"
 
 [[package]]
 name = "shlex"