fix(ci): explicitly set pnpm version in action-setup to fix lockfile v9 parsing

Author: jihchi

.github/workflows/main.yml

@@ -30,6 +30,8 @@ jobs:
           check-latest: true
 
       - uses: pnpm/action-setup@v6
+        with:
+          version: 10.14.0
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile