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

Author: renovate[bot]

.github/workflows/webpack.yml

@@ -22,7 +22,7 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - name: Use Pnpm v9.14.1
-      uses: pnpm/action-setup@v2
+      uses: pnpm/action-setup@v4
       with:
         version: 9.14.1