Add Node 18 to CI (#1481)

Author: ddzz

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu, windows ]
-        node-version: [10.x, 12.x, 14.x, 16.x]
+        node-version: [10.x, 12.x, 14.x, 16.x, 18.x]
 
     steps:
     - uses: actions/checkout@v3