chore(ci): Add nodejs 20 and remove support for 16 (#26)

Author: sadjow

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16, 18]
+        node-version: [18, 20]
 
     steps:
       - name: Checkout code