Bump docker/metadata-action in /.github/actions/manifest

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 5.10.0 to 6.0.0.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@c299e40...030e881)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/actions/manifest/action.yml

@@ -104,7 +104,7 @@ runs:
         echo "date=$(date -u +%Y\-%m\-%d\T%H\:%M\:%S\Z)" >> $GITHUB_OUTPUT
 
     - name: Image Metadata
-      uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
+      uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6.0.0
       id: metadata
       with:
         tags: |