chore: Update pnpm in CI

Author: sidharthv96

.github/workflows/build.yml

@@ -17,9 +17,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - uses: pnpm/action-setup@v2
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - name: Setup Node.js ${{ matrix.node }}
         uses: actions/setup-node@v4