refactor: Run tests on Node 18 & 20

Author: khalwat

.github/workflows/node.js.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [18.x, 20.x]
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}