Bumps `version.thorntail` from 2.2.0.Final to 2.2.1.Final.

Updates `bom` from 2.2.0.Final to 2.2.1.Final
- [Release notes](https://github.com/thorntail/thorntail/releases)
- [Commits](thorntail/thorntail@2.2.0.Final...2.2.1.Final)

Updates `thorntail-maven-plugin` from 2.2.0.Final to 2.2.1.Final

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