deps: change min required nodejs to v20 (breaking)

Jacky Zhao

2024-08-06 38361aaf489708432eb4b07986b271ecf59d8189

 package.json

@@ -21,7 +21,7 @@
  },
  "engines": {
    "npm": ">=9.3.1",
    "node": ">=18.14"
    "node": "20 || >=22"
  },
  "keywords": [
    "site generator",