Bump webpack from 4.47.0 to 5.94.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.47.0 to 5.94.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.47.0...v5.94.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
...

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

packages/mjml-browser/package.json

@@ -31,7 +31,7 @@
     "babel-loader": "^8.0.6",
     "rimraf": "^3.0.2",
     "uglifyjs-webpack-plugin": "^2.1.3",
-    "webpack": "^4.36.1",
+    "webpack": "^5.94.0",
     "webpack-cli": "^3.3.6"
   }
 }