chore(package): update request to 2.83.0

The old request package has some vulnerable dependencies inside. So because nsp detected it has to be updated, see: https://nodesecurity.io/advisories/566

#3169

Author: lukas.bonzelett

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "less",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "Leaner CSS",
   "homepage": "http://lesscss.org",
   "author": {
@@ -46,8 +46,8 @@
     "mime": "^1.4.1",
     "mkdirp": "^0.5.0",
     "promise": "^7.1.1",
-    "source-map": "^0.5.3",
-    "request": "2.81.0"
+    "request": "^2.83.0",
+    "source-map": "^0.5.3"
   },
   "devDependencies": {
     "diff": "^3.2.0",