Bump docker/build-push-action from 6.5.0 to 6.6.0 (#4)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.5.0 to 6.6.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@5176d81...4f7cdeb)

---
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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
           install: true
 
       - name: Build Docker image and store in cache
-        uses: docker/build-push-action@5176d81f87c23d6fc96624dfdbcd9f3830bbe445
+        uses: docker/build-push-action@4f7cdeb0f05278b464e71357394bf2c61f94138e
         with:
           context: .
           push: false