Update docker/build-push-action action to v6.18.0

Author: renovate[bot]

.github/workflows/main.yml

@@ -107,7 +107,7 @@ jobs:
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
-        uses: docker/build-push-action@v6.9.0
+        uses: docker/build-push-action@v6.18.0
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}