build(deps): bump wagtail from 7.0.2 to 7.1

Bumps [wagtail](https://github.com/wagtail/wagtail) from 7.0.2 to 7.1.
- [Release notes](https://github.com/wagtail/wagtail/releases)
- [Changelog](https://github.com/wagtail/wagtail/blob/main/CHANGELOG.txt)
- [Commits](wagtail/wagtail@v7.0.2...v7.1)

---
updated-dependencies:
- dependency-name: wagtail
  dependency-version: '7.1'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]