Server: update dev dependencies

package.json

@@ -67,9 +67,9 @@
   "devDependencies": {
     "chai": "^3.3.0",
     "commander": "^2.9.0",
-    "mocha": "^2.3.3",
+    "mocha": "^3.0.1",
     "standard": "^7.0.1",
-    "supertest": "^1.1.0"
+    "supertest": "^2.0.0"
   },
   "standard": {
     "ignore": [