[cargo](deps): Bump itoa from 1.0.8 to 1.0.9

Bumps [itoa](https://github.com/dtolnay/itoa) from 1.0.8 to 1.0.9.
- [Release notes](https://github.com/dtolnay/itoa/releases)
- [Commits](dtolnay/itoa@1.0.8...1.0.9)

---
updated-dependencies:
- dependency-name: itoa
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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