Update Node.js version in release_candidate.yml

Author: jonrohan

.github/workflows/release_candidate.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 14.x
+          node-version: 20
 
       - name: Install dependencies
         run: npm ci