Bump docker/build-push-action from 6.6.0 to 6.6.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.6.0 to 6.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@4f7cdeb...16ebe77)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/tests.yml

@@ -43,7 +43,7 @@ jobs:
           install: true
 
       - name: Build Docker image and store in cache
-        uses: docker/build-push-action@4f7cdeb0f05278b464e71357394bf2c61f94138e
+        uses: docker/build-push-action@16ebe778df0e7752d2cfcbd924afdbbd89c1a755
         with:
           context: .
           push: false