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

@@ -60,7 +60,7 @@
     "stylelint-scss": "^3.18.0",
     "stylelint-webpack-plugin": "^2.1.1",
     "url-loader": "^4.1.1",
-    "webpack": "^5.19.0",
+    "webpack": "^5.21.2",
     "webpack-cli": "^4.4.0",
     "webpack-dev-server": "^3.11.2",
     "webpack-manifest-plugin": "^3.0.0",