Merge pull request #585 from ckeditor/ci/3923

Other: Upgraded the minimal version of Node.js to 20.0.0 due to the end of LTS.

MAJOR BREAKING CHANGE: Upgraded the minimal version of Node.js to 20.0.0 due to the end of LTS.

Author: przemyslaw-zan

package.json

@@ -82,7 +82,7 @@
     "ws": "^8"
   },
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "scripts": {
     "dev": "echo \"Use 'dev:16', 'dev:17', 'dev:18', or 'dev:19' depending on the version of React you want to test\"",