Bump wagtail from 4.2.2 to 4.2.4

Bumps [wagtail](https://github.com/wagtail/wagtail) from 4.2.2 to 4.2.4.
- [Release notes](https://github.com/wagtail/wagtail/releases)
- [Changelog](https://github.com/wagtail/wagtail/blob/main/CHANGELOG.txt)
- [Commits](wagtail/wagtail@v4.2.2...v4.2.4)

---
updated-dependencies:
- dependency-name: wagtail
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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