Switch to hardcoded Node.js version + Renovate to avoid action lag

Author: karlhorky

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 'lts/*'
+          node-version: '22.18.0'
           cache: 'pnpm'
       - name: Install dependencies
         run: pnpm install