build(deps): bump docker/metadata-action from 4.4.0 to 5.5.0

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 4.4.0 to 5.5.0.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Upgrade guide](https://github.com/docker/metadata-action/blob/master/UPGRADE.md)
- [Commits](docker/metadata-action@c4ee3ad...dbef880)

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

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

.github/workflows/ci-build.yml

@@ -428,7 +428,7 @@ jobs:
 
     - name: Extract metadata (tags, labels) for Docker
       id: meta
-      uses: docker/metadata-action@c4ee3adeed93b1fa6a762f209fb01608c1a22f1e # v4.4.0
+      uses: docker/metadata-action@dbef88086f6cef02e264edb7dbf63250c17cef6c # v5.5.0
       with:
         images: harbor.stfc.ac.uk/datagateway/datagateway-api