chore(deps): Update docker/build-push-action action to v6 (#129)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yml

@@ -67,7 +67,7 @@ jobs:
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           push: true
           tags: supabase/stripe-sync-engine:latest,supabase/stripe-sync-engine:v${{ needs.release.outputs.new-release-version }}