drop node 18 and 22 support

Author: gruebel

.github/workflows/nodejs-test.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['18', '20']
+        node-version: ['20', '22']
     steps:
     - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8  # v5.0.0
     - name: Use Node.js ${{ matrix.node-version }}