Upgrade CI to node 20

Author: TheSpyder

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: yarn
       - run: yarn install
       - run: yarn test