Bump docker/build-push-action from 6.5.0 to 6.6.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.5.0 to 6.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@5176d81...16ebe77)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -97,7 +97,7 @@ jobs:
             description="The NGINX Ingress Operator is a Kubernetes/OpenShift component which deploys and manages one or more NGINX/NGINX Plus Ingress Controllers"
 
       - name: Build Image
-        uses: docker/build-push-action@5176d81f87c23d6fc96624dfdbcd9f3830bbe445 # v6.5.0
+        uses: docker/build-push-action@16ebe778df0e7752d2cfcbd924afdbbd89c1a755 # v6.6.1
         with:
           context: "."
           cache-from: type=gha