ci: node v20

Author: zirkelc

.github/workflows/preview.yml

@@ -16,9 +16,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v2.1.4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 20
 
       - run: corepack enable