Bump IPNetwork2 from 2.4.0.126 to 2.5.211
Bumps [IPNetwork2](https://github.com/lduchosal/ipnetwork) from 2.4.0.126 to 2.5.211.
- [Release notes](https://github.com/lduchosal/ipnetwork/releases)
- [Commits](https://github.com/lduchosal/ipnetwork/commits)
Signed-off-by: dependabot[bot] <support@github.com>