Bump webpack from 5.19.0 to 5.21.2

Bumps [webpack](https://github.com/webpack/webpack) from 5.19.0 to 5.21.2.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.19.0...v5.21.2)

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

package.json

@@ -41,7 +41,7 @@
     "stylelint-no-browser-hacks": "^1.2.1",
     "stylelint-order": "^4.1.0",
     "stylelint-scss": "^3.19.0",
-    "webpack": "^5.19.0",
+    "webpack": "^5.21.2",
     "webpack-cli": "^4.5.0",
     "webpack-dev-server": "^3.11.2",
     "webpack-merge": "^4.2.2",