fixup! ci: Explicitly use python 3.11 and run clnvm explicitly.

Author: cdecker

.github/workflows/check-self.yml

@@ -38,7 +38,7 @@ jobs:
         UV_PYTHON: 3.11
       run: |
         cd libs/cln-version-manager
-        uv run --extra cli clnvm get-all
+        uv run --extra cli python3 clnvm/cli.py get-all
         
     - name: Install Protoc
       uses: arduino/setup-protoc@v3