Bump pnpm/action-setup to v4

Author: kategengler

.github/actions/setup/action.yml

@@ -8,7 +8,7 @@ inputs:
 runs:
   using: 'composite'
   steps:
-    - uses: pnpm/action-setup@v2
+    - uses: pnpm/action-setup@v4
       name: Install pnpm
       with:
         version: 8