ci: attempt to fix corepack

Author: segunadebayo

.github/workflows/pkg-pr.yml

@@ -10,12 +10,13 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - run: corepack enable
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: "pnpm"
 
+      - run: corepack enable
+
       - name: Install dependencies
         run: pnpm install