Fix check-libs charmcraft channel (#179)

Author: carlcsaposs-canonical

.github/workflows/release.yaml

@@ -20,6 +20,7 @@ jobs:
       - name: Check libs
         uses: canonical/charming-actions/[email protected]
         with:
+          charmcraft-channel: latest/beta/data-platform  # TODO: remove after charmcraft 3.3 stable release
           credentials: "${{ secrets.CHARMHUB_TOKEN }}" # FIXME: current token will expire in 2023-07-04
           github-token: "${{ secrets.GITHUB_TOKEN }}"