Bump docker/build-push-action from 3 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 3 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v3...v6)

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

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

.github/workflows/docker-build.yml

@@ -48,7 +48,7 @@ jobs:
         password: ${{ secrets.GITHUB_TOKEN }}
     - name: Build and push
       id: push
-      uses: docker/build-push-action@v3
+      uses: docker/build-push-action@v6
       with:
         context: .
         platforms: linux/amd64,linux/arm64