Update Rake version to support development on Ruby 3

[scytherswings]

Rake 13.0.x introduces fixes in PR #326 which fix kwargs behavior which is currently broken when trying to develop locally in this project on newer Ruby versions.

[chillaq]

Thanks @scytherswings , will check with the team.

[sanzmauro]

Hi @scytherswings , we released ruby SDK 8.0.0 that contains a fix for this issue.

I will close the issue, let me know if anything comes up!

Regards,
Mauro