chore(deps): update docker/build-push-action action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -77,7 +77,7 @@ jobs:
 
       - name: Build and push the Docker image from the specified Dockerfile
         id: docker_build
-        uses: docker/build-push-action@c84f38281176d4c9cdb1626ffafcd6b3911b5d94 # tag=v3.1.1
+        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
         with:
           context: ${{ env.ROOTDIR }}
           file: ${{ env.WORKDIR }}/Dockerfile