chore: switch to github runner (#196)

Author: hardfist

.github/workflows/copilot-setup-steps.yml

@@ -17,7 +17,7 @@ permissions: {}
 jobs:
   # The job MUST be called `copilot-setup-steps` or it will not be picked up by Copilot.
   copilot-setup-steps:
-    runs-on: rspack-ubuntu-22.04-large
+    runs-on: ubuntu-22.04
 
     # Set the permissions to the lowest permissions possible needed for your steps.
     # Copilot will be given its own token for its operations.