chore: update dependencies

package.json

@@ -54,7 +54,7 @@
     ]
   },
   "engines": {
-    "node": "8.6.0"
+    "node": "9.2.0"
   },
   "devDependencies": {
     "@types/body-parser": "^1.16.4",
@@ -67,19 +67,19 @@
     "chai": "^4.1.0",
     "coveralls": "^3.0.0",
     "jest": "^21.2.1",
-    "mocha": "^4.0.0",
+    "mocha": "^4.0.1",
     "supertest": "^3.0.0",
-    "ts-jest": "^21.0.1",
-    "ts-loader": "^2.3.7",
+    "ts-jest": "^21.2.4",
+    "ts-loader": "^3.2.0",
     "ts-node": "^3.2.0",
-    "tslint": "^5.5.0",
-    "typescript": "^2.4.1",
-    "webpack": "^3.6.0"
+    "tslint": "^5.8.0",
+    "typescript": "^2.6.2",
+    "webpack": "^3.9.1"
   },
   "dependencies": {
     "body-parser": "^1.17.2",
     "dotenv": "^4.0.0",
-    "express": "^4.15.3",
-    "pm2": "^2.5.0"
+    "express": "^4.16.2",
+    "pm2": "^2.7.1"
   }
 }