Bump docker/metadata-action from 4 to 5

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](docker/metadata-action@v4...v5)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yaml

@@ -122,7 +122,7 @@ jobs:
         run: chmod +x hegel-linux-*
 
       - name: Generate image tags
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         id: meta
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release.yaml

@@ -26,7 +26,7 @@ jobs:
       # ci.yaml workflow.
       - name: Generate source image name
         id: src
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           images: ${{ env.IMAGE }}
@@ -35,7 +35,7 @@ jobs:
 
       - name: Generate image release tags
         id: meta
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           images: ${{ env.IMAGE }}