Bump docker/build-push-action from 6.5.0 to 6.6.1 (Z3Prover#7338)

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@v6.5.0...v6.6.1)

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

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

Author: dependabot[bot]

.github/workflows/docker-image.yml

@@ -41,7 +41,7 @@ jobs:
             type=edge
             type=sha,prefix=ubuntu-20.04-bare-z3-sha-
       - name: Build and push Bare Z3 Docker Image
-        uses: docker/build-push-action@v6.5.0
+        uses: docker/build-push-action@v6.6.1
         with:  
           context: .
           push: true