Updated Node version to 20 for GitHub publish workflow

.github/workflows/build-publish.yml

@@ -13,7 +13,7 @@ jobs:
       # Setup .npmrc file to publish to npm
       - uses: actions/setup-node@v2
         with:
-          node-version: '14.x'
+          node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'
       - name: Install dependencies
         run: yarn