build: add node v18 (#546)

Author: aladdin-add

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node: [17.x, 16.x, 14.x, 12.x, "12.22.0"]
+        node: [18.x, 17.x, 16.x, 14.x, 12.x, "12.22.0"]
         include:
         - os: windows-latest
           node: "16.x"