Update ci.yml

.github/workflows/ci.yml

@@ -11,14 +11,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Configure Git Credentials
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
+      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
       - uses: actions/cache@v4
         with:
-          key: ${{ github.ref }}
+          key: mkdocs-material-${{ env.cache_id }}
           path: .cache
-      - run: pip install mkdocs-material
-      - run: pip install pillow cairosvg
-      - run: pip install mkdocs-git-revision-date-localized-plugin
+          restore-keys: |
+            mkdocs-material-
+      - run: pip install mkdocs-material 
       - run: mkdocs gh-deploy --force