misc small fixes:

- update actions/cache to v4

- update haskell/actions/setup to haskell-actions/setup

- stack doesn't support ghc < 8.4, remove from CI

- don't fail immediately

- add -fpermissive flag to gcc

- only build 9.6.6 with macos and windows latest

- bump base upper bound

gf.cabal

@@ -73,7 +73,7 @@ library
   build-depends:
     -- GHC 8.0.2 to GHC 8.10.4
     array >= 0.5.1 && < 0.6,
-    base >= 4.9.1 && < 4.19 ,
+    base >= 4.9.1 && < 4.22,
     bytestring >= 0.10.8 && < 0.12,
     containers >= 0.5.7 && < 0.7,
     exceptions >= 0.8.3 && < 0.11,
@@ -398,7 +398,7 @@ test-suite gf-tests
   main-is: run.hs
   hs-source-dirs: testsuite
   build-depends:
-    base >= 4.9.1 && < 4.16,
+    base >= 4.9.1,
     Cabal >= 1.8,
     directory >= 1.3.0 && < 1.4,
     filepath >= 1.4.1 && < 1.5,