fix: upgrade @types/request from 2.47.1 to 2.48.12

Snyk has created this PR to upgrade @types/request from 2.47.1 to 2.48.12.

See this package in npm:
https://www.npmjs.com/package/@types/request

See this project in Snyk:
https://app.snyk.io/org/roma8389/project/7873cf15-3c44-4d49-b218-ced57450efdb?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -56,7 +56,7 @@
   "dependencies": {
     "@types/js-yaml": "^4.0.1",
     "@types/node": "^10.12.0",
-    "@types/request": "^2.47.1",
+    "@types/request": "^2.48.12",
     "@types/stream-buffers": "^3.0.3",
     "@types/tar": "^4.0.3",
     "@types/underscore": "^1.8.9",