chore(deps): update pnpm/action-setup action to v4

Author: renovate[bot]

.github/workflows/CI.yml

@@ -40,7 +40,7 @@ jobs:
           node-version: ${{ matrix.node }}
 
       - name: Setup Pnpm
-        uses: pnpm/action-setup@v2
+        uses: pnpm/action-setup@v4
         with:
           version: ${{ matrix.pnpm }}