build(deps): bump webpack-dev-middleware and @strapi/strapi in /backe…

…nd (#394)

Bumps [webpack-dev-middleware](https://github.com/webpack/webpack-dev-middleware) to 6.1.2 and updates ancestor dependency [@strapi/strapi](https://github.com/strapi/strapi). These dependencies need to be updated together.


Updates `webpack-dev-middleware` from 6.1.1 to 6.1.2
- [Release notes](https://github.com/webpack/webpack-dev-middleware/releases)
- [Changelog](https://github.com/webpack/webpack-dev-middleware/blob/v6.1.2/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-middleware/compare/v6.1.1...v6.1.2)

Updates `@strapi/strapi` from 4.20.5 to 4.24.0
- [Release notes](https://github.com/strapi/strapi/releases)
- [Commits](https://github.com/strapi/strapi/compare/v4.20.5...v4.24.0)

---
updated-dependencies:
- dependency-name: webpack-dev-middleware
  dependency-type: indirect
- dependency-name: "@strapi/strapi"
  dependency-type: direct:production
...

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