Fix containerd setup

Somehow the containerd config in the runner is broken, which may be
related to the docker install. This can be fixed by resetting the
config, as suggested in [1].

[1] https://serverfault.com/a/108911

Issue: PTFE-1367

.github/workflows/actions.yaml

@@ -71,6 +71,10 @@ jobs:
 
         # Start cri-o service
         sudo systemctl start crio
+
+        # Fix broken containerd setup
+        sudo containerd config default | sudo tee /etc/containerd/config.toml
+        sudo systemctl restart containerd
       # TODO: cache the installed image?
 
     - name: Downgrade Oras to 0.12.0