Update cache

Author: alexdriedger

.github/workflows/push-docs-site.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
-      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
+      - run: echo "cache_id=$(date --utc '+%F')" >> $GITHUB_ENV
       - uses: actions/cache@v4
         with:
           key: mkdocs-material-${{ env.cache_id }}