Merge pull request #5801 from learningequality/dependabot/github_actions/docker/build-push-action-7

chore(deps): bump docker/build-push-action from 6 to 7

Author: rtibbles

.github/workflows/containerbuild.yml

@@ -57,7 +57,7 @@ jobs:
         DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index
 
     - name: Build and push Docker image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: ./docker
         file: ./docker/Dockerfile.postgres.dev
@@ -97,7 +97,7 @@ jobs:
       uses: docker/setup-buildx-action@v3
 
     - name: Build Docker image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: ./
         file: ./docker/Dockerfile.nginx.prod