chore: use Node matrix with 16.x, 18.x, 20.x

Co-authored-by: Jesse Portnoy <jesse@packman.io>

Author: luwes

.github/workflows/ci.yml

@@ -8,8 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        # node-version: [16.x, 18.x, 20.x]
-        node-version: [16.x]
+        node-version: [16.x, 18.x, 20.x]
 
     steps:
     - uses: actions/checkout@v3