remove 16.x in testing for nodejs versions

Author: aegatlin

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x, 22.x]
+        node-version: [18.x, 20.x, 22.x]
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node-version }}