ci: add Node.js v20

Author: snitin315

.github/workflows/nodejs.yml

@@ -66,7 +66,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [14.x, 16.x, 18.x, 19.x]
+        node-version: [14.x, 16.x, 18.x, 20.x]
         shard: ["1/4", "2/4", "3/4", "4/4"]
         webpack-version: [latest]
         dev-server-version: [latest]