Skip 18, use 24 (#4519)

Author: soulgalore

.github/workflows/unittests.yml

@@ -12,7 +12,7 @@ jobs:
     if: ${{ !contains(github.event.head_commit.message, 'docs:') }}
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x]
+        node-version: [20.x, 22.x, 24.x]
     steps:
     - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}