build(deps): bump docker/metadata-action from 5 to 6

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 5 to 6.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/v5...v6)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build_publish_docker_image.yml

@@ -100,7 +100,7 @@ jobs:
 
       - name: Extract Metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         env:
           DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,manifest-descriptor # Important for digest annotation (used by Github packages)
         with:
@@ -210,7 +210,7 @@ jobs:
 
       - name: Extract Metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         env:
           DOCKER_METADATA_ANNOTATIONS_LEVELS: index
         with: