Update Node.js version to 20 in CI workflow

Author: francinelucca

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
       - run: yarn
       - name: Building
         run: yarn build