Drop support of nodejs 18

Author: aivus

.github/workflows/node.js.yml

@@ -15,7 +15,6 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 18
           - 20
           - 22
           - current

README.md

@@ -16,7 +16,7 @@ Download the website to the local directory (including all css, images, js, etc.
 This module is an Open Source Software maintained by one developer in free time. If you want to thank the author of this module you can use [GitHub Sponsors](https://github.com/sponsors/s0ph1e) or [Patreon](https://www.patreon.com/s0ph1e).
 
 ## Requirements
-* nodejs version >= 18.17
+* nodejs version >= 20.18.1
 * website-scraper since v5 is pure ESM (it doesn't work with CommonJS), [read more in release v5.0.0 docs](https://github.com/website-scraper/node-website-scraper/releases/tag/v5.0.0)
 
 ## Installation

package.json

@@ -60,6 +60,6 @@
     "lib"
   ],
   "engines": {
-    "node": ">=18.17"
+    "node": ">=20.18.1"
   }
 }