chore(deps-dev): bump @types/webpack from 4.39.3 to 4.39.4

Bumps [@types/webpack](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/webpack) from 4.39.3 to 4.39.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/webpack)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -126,7 +126,7 @@
  "@types/semver": "^6.0.2",
  "@types/sinon": "^7.5.0",
  "@types/username": "^3.0.0",
- "@types/webpack": "^4.39.3",
+ "@types/webpack": "^4.39.4",
  "@types/webpack-dev-middleware": "^2.0.3",
  "@types/webpack-hot-middleware": "^2.16.3",
  "@types/webpack-merge": "^4.1.5",

yarn.lock

@@ -1160,10 +1160,10 @@
  "@types/source-list-map" "*"
  source-map "^0.6.1"
 
-"@types/webpack@*", "@types/webpack@^4.39.3":
- version "4.39.3"
- resolved "https://registry.yarnpkg.com/@types/webpack/-/webpack-4.39.3.tgz#1d55f8fce117a325368bf7612950552ee4ed4467"
- integrity sha512-afGNNuTfKk1YfHrQ+IwF0QhDkSSMIMMt8BRRErTKaGVvWTMABDjT22/4kJ4bRoSzir9LVgxuuceyZ4Z5I82Cyg==
+"@types/webpack@*", "@types/webpack@^4.39.4":
+ version "4.39.4"
+ resolved "https://registry.yarnpkg.com/@types/webpack/-/webpack-4.39.4.tgz#680139788f63f5279ca6d1ffb08666a7ddeca5cf"
+ integrity sha512-VubX3/qXtpWmHhd422GdtAHwAMLHSsgXx0dtspd2DZ7pMnCRKjduJN8Zp5Ex4e1fH4FKFBBgWTvsry0WL8wHsQ==
  dependencies:
  "@types/anymatch" "*"
  "@types/node" "*"