Bump webpack in /modules/contentbox/themes/default

Bumps [webpack](https://github.com/webpack/webpack) from 5.97.1 to 5.105.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Changelog](https://github.com/webpack/webpack/blob/main/CHANGELOG.md)
- [Commits](webpack/webpack@v5.97.1...v5.105.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-version: 5.105.0
  dependency-type: direct:production
...

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Author: dependabot[bot]