Bump webpack from 4.44.2 to 5.25.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.44.2 to 5.25.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.44.2...v5.25.0)

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

package.json

@@ -12,7 +12,7 @@
         "sass": "^1.28",
         "postcss-loader": "^4.0",
         "sass-loader": "^10.0",
-        "webpack": "^4.39",
+        "webpack": "^5.25",
         "webpack-cli": "^4.2"
     },
     "scripts": {