Revert "increase node ver to 20.8.1"

This reverts commit 9ee9f39.

README.md

@@ -63,7 +63,7 @@ npm run nuxt:serve
 
 ## Build With
 
-* [Node.js/NPM] (https://github.com/nodesource/distributions) Node.js (tested with node.js 20.8.1) & NPM (node package manager - tested with 10.1.0) are required to install Vue.js
+* [Node.js/NPM] (https://github.com/nodesource/distributions) Node.js (tested with node.js 18) & NPM (node package manager - tested with 9.8) are required to install Vue.js
 * [Vue.js](https://github.com/vuejs/vue) - tested with 5.0.8, Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web
 * [Electron](https://github.com/github/electron) - Build cross-platform desktop apps with JavaScript, HTML, and CSS
 * [Vue CLI Plugin Electron Builder](https://github.com/nklayman/vue-cli-plugin-electron-builder) - A Vue Cli 3/4 plugin for Electron with no required configuration

package.json

@@ -77,7 +77,7 @@
     "@types/chai": "^4.2.14",
     "@types/jest": "^26.0.15",
     "@types/mocha": "^7.0.2",
-    "@types/node": "^20.8.1",
+    "@types/node": "^12.19.7",
     "@types/sinon": "^7.5.2",
     "@typescript-eslint/eslint-plugin": "^2.34.0",
     "@typescript-eslint/parser": "^2.34.0",