refactor: replace request-promise-native with util.promisify (#5572)

Author: jeneser

packages/@vue/cli-shared-utils/lib/request.js

@@ -1,7 +1,7 @@
 exports.request = {
   get (uri, opts) {
     // lazy require
-    const request = require('request-promise-native')
+    const request = require('util').promisify(require('request'))
     const reqOpts = {
       method: 'GET',
       timeout: 30000,

packages/@vue/cli-shared-utils/package.json

@@ -30,7 +30,6 @@
     "ora": "^3.4.0",
     "read-pkg": "^5.1.1",
     "request": "^2.88.2",
-    "request-promise-native": "^1.0.8",
     "semver": "^6.1.0",
     "strip-ansi": "^6.0.0"
   },