Update test ci node versions.

Author: mrtusc

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16, 18, 19]
+        node-version: [18, 20]
     steps:
       - name: Checkout code
         uses: actions/checkout@v3