Bump towncrier from 23.11.0 to 24.7.1

Bumps [towncrier](https://github.com/twisted/towncrier) from 23.11.0 to 24.7.1.
- [Release notes](https://github.com/twisted/towncrier/releases)
- [Changelog](https://github.com/twisted/towncrier/blob/trunk/NEWS.rst)
- [Commits](twisted/towncrier@23.11.0...24.7.1)

---
updated-dependencies:
- dependency-name: towncrier
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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