Bump json5, copy-webpack-plugin, webpack and webpack-cli in /www

Removes [json5](https://github.com/json5/json5). It's no longer used after updating ancestor dependencies [json5](https://github.com/json5/json5), [copy-webpack-plugin](https://github.com/webpack-contrib/copy-webpack-plugin), [webpack](https://github.com/webpack/webpack) and [webpack-cli](https://github.com/webpack/webpack-cli). These dependencies need to be updated together.


Removes `json5`

Updates `copy-webpack-plugin` from 5.1.2 to 11.0.0
- [Release notes](https://github.com/webpack-contrib/copy-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/copy-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/copy-webpack-plugin/compare/v5.1.2...v11.0.0)

Updates `webpack` from 4.44.2 to 5.75.0
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.44.2...v5.75.0)

Updates `webpack-cli` from 3.3.12 to 5.0.1
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/v3.3.12...webpack-cli@5.0.1)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: copy-webpack-plugin
  dependency-type: direct:development
- dependency-name: webpack
  dependency-type: direct:development
- dependency-name: webpack-cli
  dependency-type: direct:development
...

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

www/package.json

@@ -26,9 +26,9 @@
     "wazem": "file:../pkg"
   },
   "devDependencies": {
-    "copy-webpack-plugin": "^5.1.2",
+    "copy-webpack-plugin": "^11.0.0",
-    "webpack": "^4.44.2",
+    "webpack": "^5.75.0",
-    "webpack-cli": "^3.1.0",
+    "webpack-cli": "^5.0.1",
     "webpack-dev-server": "^3.1.5"
   }
 }