Update packages

package.json

@@ -9,19 +9,19 @@
   },
   "dependencies": {
     "cors": "^2.8.5",
-    "dotenv": "^6.0.0",
-    "express": "^4.16.3",
-    "geo-tz": "^4.0.1",
+    "dotenv": "^6.2.0",
+    "express": "^4.16.4",
+    "geo-tz": "^4.0.2",
     "grunt": "^1.0.4",
-    "moment-timezone": "^0.5.17",
+    "moment-timezone": "^0.5.25",
     "suncalc": "^1.8.0"
   },
   "devDependencies": {
-    "chai": "^4.1.2",
+    "chai": "^4.2.0",
     "grunt-contrib-jshint": "^1.1.0",
     "hippie": "^0.5.2",
     "istanbul": "^0.4.5",
     "mocha": "^5.2.0",
-    "nock": "^9.2.6"
+    "nock": "^9.6.1"
   }
 }