Update docker/build-push-action action from v6.15.0 to v6.16.0 (.github/workflows/release-x-manual-docker-containers.yml) (#12309)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build-docker-images-for-testing.yml

@@ -51,7 +51,7 @@ jobs:
 
       - name: Build
         id: docker_build
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
+        uses: docker/build-push-action@14487ce63c7a62a4a324b0bfb37086795e31c6c1 # v6.16.0
         timeout-minutes: 15
         env:
           DOCKER_BUILD_CHECKS_ANNOTATIONS: false

.github/workflows/release-x-manual-docker-containers.yml

@@ -66,7 +66,7 @@ jobs:
         # we cannot set any tags here, those are set on the merged digest in release-x-manual-merge-container-digests.yml
       - name: Build and push images
         id: build
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
+        uses: docker/build-push-action@14487ce63c7a62a4a324b0bfb37086795e31c6c1 # v6.16.0
         env:
           DOCKER_BUILD_CHECKS_ANNOTATIONS: false
         with: