Fix npm ci sync error in publish workflow

Changed npm ci to npm install and removed npm@latest upgrade to avoid
version mismatches between local and CI environments.

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

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

Author: naveensky

.github/workflows/npm-publish.yml

@@ -23,11 +23,8 @@ jobs:
           node-version: '20'
           registry-url: 'https://registry.npmjs.org'
 
-      - name: Update npm
-        run: npm install -g npm@latest
-
       - name: Install dependencies
-        run: npm ci
+        run: npm install
 
       - name: Run tests
         run: npm test