Bump ctor from 0.2.2 to 0.2.4

Bumps [ctor](https://github.com/mmastrac/rust-ctor) from 0.2.2 to 0.2.4.
- [Commits](https://github.com/mmastrac/rust-ctor/commits)

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

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