github: [skip ci]: 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](docker/metadata-action@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>

Author: dependabot[bot]

.github/workflows/github-packages.yml

@@ -53,7 +53,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY_NAME }}/${{ env.REGISTRY_IMAGE }}
           tags: |

.github/workflows/rpm-builder.yaml

@@ -125,7 +125,7 @@ jobs:
 
     - name: Image metadata
       id: metadata
-      uses: docker/metadata-action@v5
+      uses: docker/metadata-action@v6
       with:
         # list of Docker images to use as base name for tags
         images: |

.github/workflows/weekly-github-packages.yml

@@ -40,7 +40,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY_NAME }}/${{ env.REGISTRY_IMAGE }}
           tags: |