update release script to use node 20

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       # Injected by generate-workflows.js
       - uses: actions/setup-node@v1
         with:
-          node-version: "16"
+          node-version: "20"
       - uses: actions/cache@v2
         id: yarn-cache
         name: Load npm deps from cache