ci: add node 18 to test matrix, remove node 17 (#96)

Author: Fdawgs

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node: [17.x, 16.x, 14.x, 12.x, '12.22.0']
+        node: [18.x, 16.x, 14.x, 12.x, '12.22.0']
         include:
           - os: windows-latest
             node: '16.x'