Bump docker/metadata-action from 4 to 5 (#846)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 4 to 5.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Upgrade guide](https://github.com/docker/metadata-action/blob/master/UPGRADE.md)
- [Commits](https://github.com/docker/metadata-action/compare/v4...v5)

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

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

.github/workflows/client-image.yml

@@ -64,7 +64,7 @@ jobs:
 
     - name: 'Extract metadata (tags, labels) for Docker'
       id: meta
-      uses: docker/metadata-action@v4
+      uses: docker/metadata-action@v5
       with:
         images: recksato/robosats-client
         tags: |

.github/workflows/coordinator-image.yml

@@ -55,7 +55,7 @@ jobs:
 
     - name: 'Extract metadata (tags, labels) for Docker'
       id: meta
-      uses: docker/metadata-action@v4
+      uses: docker/metadata-action@v5
       with:
         images: recksato/robosats
         tags: |