rm version from pnpm setup github action

Author: sommeeeer

.github/actions/pnpm-setup/action.yml

@@ -12,8 +12,6 @@ runs:
 
     # Install pnpm. https://github.com/pnpm/action-setup
     - uses: pnpm/action-setup@v4
-      with:
-        version: 9
         # run_install: false
 
     # Get pnpm store path so we can cache it