Fix pnpm version to match package.json exactly

### 🐛 Bug Fixes
- Updated pnpm version from 10 to 10.12.4 to match package.json packageManager field exactly
- Resolves ERR_PNPM_BAD_PM_VERSION error in GitHub Actions workflow

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

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

.github/workflows/version-and-publish.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          version: 10.12.4
 
       - name: Get pnpm store directory
         shell: bash
@@ -356,7 +356,7 @@ jobs:
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          version: 10.12.4
 
       - name: Get pnpm store directory
         shell: bash