chore(deps): update dependency webpack to ^4.33.0 (#142)

Author: renovate[bot]

package.json

@@ -49,7 +49,7 @@
     "@types/mocha": "5.2.7",
     "@types/node": "10.9.4",
     "@types/sinon": "7.0.12",
-    "@types/webpack": "4.4.11",
+    "@types/webpack": "4.4.32",
     "@types/webpack-env": "1.13.9",
     "awesome-typescript-loader": "^5.2.1",
     "chai": "^4.2.0",
@@ -78,7 +78,7 @@
     "ts-node": "^8.2.0",
     "tslint": "^5.17.0",
     "typescript": "^3.5.1",
-    "webpack": "^4.13.0",
+    "webpack": "^4.33.0",
     "webpack-cli": "^3.3.3"
   },
   "husky": {