ci: dropped node 18 from CI (#2469)

Author: jorgsowa

.github/workflows/nodejs.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        node-version: [18.x, 20.x, 22.x, 24.x]
+        node-version: [20.x, 22.x, 24.x]
 
     env:
       ENABLE_COVERAGE: true