feat(github-action)!: Update docker/build-push-action action to v6

Author: renovate[bot]

.github/workflows/publish.yaml

@@ -42,7 +42,7 @@ jobs:
             type=ref, event=pr
 
       - name: Build and push to ghcr
-        uses: docker/build-push-action@ca052bb54ab0790a636c9b5f226502c73d547a25 # v5
+        uses: docker/build-push-action@ee4ca427a2f43b6a16632044ca514c076267da23 # v6
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}