ci: Fix Windows dependency cache key (#794)

Co-authored-by: Dylan Anthony <[email protected]>

Author: dbanty

.github/workflows/checks.yml

@@ -24,6 +24,7 @@ jobs:
       - name: Get Python Version
         id: get_python_version
         run: echo "python_version=$(python --version)" >> $GITHUB_OUTPUT
+        shell: bash
 
       - name: Cache dependencies
         uses: actions/cache@v3