Bump wagtail-factories from 4.0.0 to 4.1.0

Bumps [wagtail-factories](https://github.com/wagtail/wagtail-factories) from 4.0.0 to 4.1.0.
- [Release notes](https://github.com/wagtail/wagtail-factories/releases)
- [Changelog](https://github.com/wagtail/wagtail-factories/blob/main/CHANGES)
- [Commits](wagtail/wagtail-factories@4.0.0...4.1.0)

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

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