ci: add node v18

Author: snitin315

.github/workflows/nodejs.yml

@@ -59,7 +59,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [12.x, 14.x, 16.x, 17.x]
+        node-version: [12.x, 14.x, 16.x, 17.x, 18.x]
         webpack-version: [latest]
         include:
           - node-version: 16.x