This version bumps the version of Net::IMAP to fix a deadlock issue
and changes timestamps to use ISO 8601 format.

Related issues:

1. https://gitlab.com/gitlab-org/charts/gitlab/-/issues/2576
2. https://github.com/ruby/net-imap/issues/14
3. https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/12869

Diff:
https://my.diffend.io/gems/gitlab-mail_room/0.0.9/0.0.10