Bump webpack from 5.6.0 to 5.9.0

Bumps [webpack](https://github.com/webpack/webpack) from 5.6.0 to 5.9.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.6.0...v5.9.0)

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

package.json

@@ -38,7 +38,7 @@
     "stylelint-no-browser-hacks": "^1.2.1",
     "stylelint-order": "^4.1.0",
     "stylelint-scss": "^3.18.0",
-    "webpack": "^5.4.0",
+    "webpack": "^5.9.0",
     "webpack-cli": "^4.0.0",
     "webpack-dev-server": "^3.11.0",
     "webpack-merge": "^4.2.2",