feat(node): drop support for node 18, 21, 23

BREAKING CHANGE: node versions 18, 21, 23 are no longer
supported.

Author: djcsdy

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x, 23.x, 24.x, 25.x]
+        node-version: [20.x, 22.x, 24.x, 25.x]
     steps:
       - name: git checkout
         uses: actions/checkout@v6

package.json

@@ -23,7 +23,7 @@
   },
   "sideEffects": false,
   "engines": {
-    "node": "^18 || >=20"
+    "node": "^20 || ^22 || ^24 || >=25"
   },
   "dependencies": {
     "@softwareventures/nullable": "^1.0.0 || ^2.0.0 || ^3.0.0",