chore(deps): bump docker/build-push-action

Bumps the production-dependencies group with 1 update: [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `docker/build-push-action` from 5 to 6
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

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

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

.github/workflows/ci.yml

@@ -73,7 +73,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push by digest (Docker Hub)
         id: build_dockerhub
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: ${{ matrix.platform }}
@@ -84,7 +84,7 @@ jobs:
           cache-to: type=gha,mode=max,scope=${{ matrix.platform }}
       - name: Build and push by digest (GHCR)
         id: build_ghcr
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: ${{ matrix.platform }}