chore(package): update dev dependencies to latest version

Author: tiagoschenkel

package.json

@@ -80,7 +80,7 @@
     "imports-loader": "^0.8.0",
     "istanbul": "^0.4.5",
     "istanbul-instrumenter-loader": "^3.0.1",
-    "karma": "^3.0.0",
+    "karma": "^3.1.1",
     "karma-chai": "^0.1.0",
     "karma-chai-sinon": "^0.1.5",
     "karma-chrome-launcher": "^2.2.0",
@@ -101,7 +101,7 @@
     "reflect-metadata": "^0.1.12",
     "remap-istanbul": "^0.12.0",
     "rimraf": "^2.6.2",
-    "sinon": "^7.0.0",
+    "sinon": "^7.1.0",
     "sinon-chai": "^3.2.0",
     "source-map-support": "^0.5.9",
     "ts-loader": "^5.2.2",
@@ -110,8 +110,8 @@
     "tslint-config-prettier": "^1.15.0",
     "typescript": "^3.1.3",
     "uglifyjs-webpack-plugin": "^2.0.1",
-    "webpack": "^4.21.0",
+    "webpack": "^4.23.1",
     "webpack-cli": "^3.1.2",
-    "webpack-dev-server": "^3.1.9"
+    "webpack-dev-server": "^3.1.10"
   }
 }