Set pythonLocation environment variable for cache key

action.yml

@@ -13,6 +13,8 @@ runs:
     with:
       enable-cache: true
       cache-dependency-glob: '.pre-commit-config.yaml'
+  - run: uv run --isolated --no-sync python -c "import os, sys; print(f'pythonLocation={sys.executable}', file=open(os.environ['GITHUB_ENV'], 'a'))"
+    shell: bash
   - uses: actions/cache@v4
     with:
       path: ~/.cache/pre-commit