drop node 18

Author: ckoegel

.github/workflows/test-pr.yml

@@ -34,7 +34,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-2022, windows-2025, ubuntu-22.04, ubuntu-24.04]
-        node-version: [18, 20, 22, 24]
+        node-version: [20, 22, 24]
       fail-fast: false
     steps:
       - name: Checkout