Build(deps-dev): Bump webpack from 4.31.0 to 4.33.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.31.0 to 4.33.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.31.0...v4.33.0)

Author: dependabot-preview[bot]

package-lock.json

@@ -14,7 +14,7 @@
   "devDependencies": {
     "@wasm-tool/wasm-pack-plugin": "0.4.2",
     "html-webpack-plugin": "^3.2.0",
-    "webpack": "^4.31.0",
+    "webpack": "^4.33.0",
     "webpack-cli": "^3.3.2",
     "webpack-dev-server": "^3.5.1"
   }