Update docker/build-push-action action to v7

Author: renovate[bot]

.github/workflows/build.yml

@@ -34,7 +34,7 @@ jobs:
           echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
 
       - name: Build and push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/amd64,linux/arm64
           push: true