update dev dependencies to latest version

Author: tiagoschenkel

package.json

@@ -65,8 +65,8 @@
   "devDependencies": {
     "@types/bluebird": "^3.5.20",
     "@types/chai": "^4.1.3",
-    "@types/mocha": "^5.2.0",
-    "@types/sinon": "^5.0.0",
+    "@types/mocha": "^5.2.1",
+    "@types/sinon": "^5.0.1",
     "bluebird": "^3.5.1",
     "browserify-versionify": "^1.0.6",
     "chai": "^4.1.2",
@@ -92,21 +92,21 @@
     "karma-webpack": "^3.0.0",
     "mocha": "^5.2.0",
     "nyc": "^12.0.2",
-    "prettier": "^1.12.1",
+    "prettier": "^1.13.5",
     "publish-please": "^3.0.1",
     "reflect-metadata": "^0.1.12",
     "remap-istanbul": "^0.11.1",
     "rimraf": "^2.6.2",
-    "sinon": "^5.0.10",
+    "sinon": "^5.1.1",
     "sinon-chai": "^3.1.0",
     "source-map-support": "^0.5.6",
-    "ts-loader": "^4.3.0",
-    "ts-node": "^6.0.5",
+    "ts-loader": "^4.4.1",
+    "ts-node": "^6.1.0",
     "tslint": "^5.10.0",
     "tslint-config-prettier": "^1.13.0",
-    "typescript": "^2.8.3",
+    "typescript": "^2.9.1",
     "uglifyjs-webpack-plugin": "^1.2.5",
-    "webpack": "^4.9.1",
+    "webpack": "^4.12.0",
     "webpack-cli": "^3.0.3",
     "webpack-dev-server": "^3.1.4"
   }