Update docker/build-push-action action to v6.15.0

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -99,7 +99,7 @@ jobs:
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
         with:
           context: .
           build-args: VERSION=${{ env.VERSION }}