github-actions: bump docker/metadata-action from 5 to 6 (#641)

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

Author: dependabot[bot]

.github/workflows/docker-riverproui.yaml

@@ -78,7 +78,7 @@ jobs:
 
       - name: Docker meta for Pro
         id: meta-pro
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ format('{0}.dkr.ecr.{1}.amazonaws.com/riverqueue/riverproui', env.ECR_ACCOUNT_ID, env.ECR_REGION) }}
           labels: |
@@ -207,7 +207,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.ECR_IMAGE }}
           tags: |

.github/workflows/docker-riverui.yaml

@@ -61,7 +61,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           labels: |
@@ -140,7 +140,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           labels: |