Update asana gem to v0.10.13 to relax oauth2 dependency

There are some minor updates to the asana gem, but we need to update
to the oauth2 gem to v2.0 since the latter removes a call to MD5.

Diff:
https://github.com/Asana/ruby-asana/compare/v0.10.3..v0.10.13

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/361284

Changelog: changed