Drop node v18 (#3880)

Author: mcollina

.github/workflows/nodejs.yml

@@ -56,9 +56,7 @@ jobs:
       max-parallel: 0
       matrix:
         node-version:
-          - 18
           - 20
-          - 21
           - 22
           - 23
         runs-on:

package.json

@@ -129,7 +129,7 @@
     "ws": "^8.11.0"
   },
   "engines": {
-    "node": ">=18.17"
+    "node": ">=20.18.1"
   },
   "tsd": {
     "directory": "test/types",