build: bump itables from 2.1.5 to 2.2.1

Bumps [itables](https://github.com/mwouts/itables) from 2.1.5 to 2.2.1.
- [Release notes](https://github.com/mwouts/itables/releases)
- [Changelog](https://github.com/mwouts/itables/blob/main/docs/changelog.md)
- [Commits](mwouts/itables@v2.1.5...v2.2.1)

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

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