Merge pull request 'Update docker/build-push-action action to v6' (#85) from renovate/docker-build-push-action-6.x into main

Reviewed-on: #85

.forgejo/workflows/build-deploy-prod.yaml

@@ -51,7 +51,7 @@ jobs:
           esac
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true

.forgejo/workflows/build-deploy-staging.yaml

@@ -35,7 +35,7 @@ jobs:
           password: ${{ secrets.CONTAINER_REGISTRY_TOKEN }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true

.forgejo/workflows/docs.yaml

@@ -30,7 +30,7 @@ jobs:
           password: ${{ secrets.CONTAINER_REGISTRY_TOKEN }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: docs/Dockerfile