Update astral-sh/setup-uv action to v6.6.0

Author: renovate[bot]

.github/workflows/ci.yml

@@ -352,7 +352,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
+      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
       - run: uvx zizmor@${ZIZMOR_VERSION} --format=sarif . > results.sarif
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}