workflows: 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/build-legacy-branch.yaml

@@ -72,7 +72,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - id: debug-meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.IMAGE_NAME }}
           tags: |
@@ -95,7 +95,7 @@ jobs:
 
       - name: Extract metadata from Github
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.IMAGE_NAME }}
           tags: |

.github/workflows/call-build-images.yaml

@@ -164,7 +164,7 @@ jobs:
     steps:
       - name: Extract metadata from Github
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ inputs.registry }}/${{ inputs.image }}
           tags: |
@@ -216,7 +216,7 @@ jobs:
       version: ${{ steps.debug-meta.outputs.version }}
     steps:
       - id: debug-meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ inputs.registry }}/${{ inputs.image }}
           tags: |

.github/workflows/call-integration-image-build.yaml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Extract metadata from Github
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ inputs.registry }}/${{ inputs.image }}
           tags: |
@@ -76,7 +76,7 @@ jobs:
 
       - name: Extract metadata from Github
         id: meta-debug
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ inputs.registry }}/${{ inputs.image }}
           tags: |

.github/workflows/pr-image-tests.yaml

@@ -28,7 +28,7 @@ jobs:
 
         - name: Extract metadata from Github
           id: meta
-          uses: docker/metadata-action@v5
+          uses: docker/metadata-action@v6
           with:
             images: ${{ github.repository }}/pr-${{ github.event.pull_request.number }}
             tags: |
@@ -100,7 +100,7 @@ jobs:
 
         - name: Extract metadata from Github
           id: meta
-          uses: docker/metadata-action@v5
+          uses: docker/metadata-action@v6
           with:
             images: ${{ github.repository }}/pr-${{ github.event.pull_request.number }}
             tags: |