build(deps): bump docker/metadata-action from 5.5.1 to 5.6.1 (spack#4…

…7682)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 5.5.1 to 5.6.1.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@8e5442c...369eb59)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-containers.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
-      - uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81
+      - uses: docker/metadata-action@369eb591f429131d6889c46b94e711f089e6ca96
         id: docker_meta
         with:
           images: |