fix: let pnpm version be read from package.json

Remove explicit version to avoid conflict with packageManager
field in package.json.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: zcg

.github/workflows/88code-release.yml

@@ -136,8 +136,6 @@ jobs:
         run: find artifacts -type f | head -50
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 10
 
       - uses: actions/setup-node@v5
         with: