specify python version

.github/workflows/build-majestic.yml

@@ -188,6 +188,11 @@ jobs:
         sudo mv lib/* /usr/local/lib/
         sudo mv include/* /usr/local/include/
 
+    - uses: actions/setup-python@v1
+      name: Install Python
+      with:
+        python-version: '3.7'
+
     - name: Install cibuildwheel
       run: |
         python -m pip install git+https://github.com/joerick/cibuildwheel.git@main