rm typo from package.json, rm unused gh actions node versions

Author: vyue013

.github/workflows/node.js.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:

package.json

@@ -10,7 +10,7 @@
   "scripts": {
     "seed": "ts-node ./server/seed/seed.ts",
     "start": "cross-env NODE_ENV=production ts-node server/server.ts",
-    "start:test": "cross-env NODE_ENV=test ts-node server/server.ts &",
+    "start:test": "cross-env NODE_ENV=test ts-node server/server.ts",
     "build": "vite build",
     "dev": "concurrently \"vite serve\" \"nodemon --exec 'ts-node' server/server.ts\"",
     "preview": "vite preview",