try this (#15196)

Author: Rich-Harris

.github/workflows/pkg.pr.new.yml

@@ -9,6 +9,9 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: install corepack
+        run: npm i -g [email protected]
+
       - run: corepack enable
       - uses: actions/setup-node@v4
         with: