Bump webpack from 4.39.2 to 4.41.0 in /assets

Bumps [webpack](https://github.com/webpack/webpack) from 4.39.2 to 4.41.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.39.2...v4.41.0)

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

Author: dependabot-preview[bot]

assets/package-lock.json

@@ -18,7 +18,7 @@
     "mini-css-extract-plugin": "^0.8.0",
     "optimize-css-assets-webpack-plugin": "^5.0.3",
     "uglifyjs-webpack-plugin": "^2.2.0",
-    "webpack": "4.39.2",
+    "webpack": "4.41.0",
     "webpack-cli": "^3.3.9"
   }
 }