mail/ruby-mime-types-data: update to 3.2021.1115

3.2021.1115 (2021-11-15)

* Updated the Apache and IANA media registry entries as of release date.

* Added conversion utilities that support the mini_mime data format. These
  have been ported from the mini_mime repository. #47

* Added IANA provisional media registries. Added some notes to
  Contributing.md about the transient nature of the provisional registration
  data. This was triggered in part by a pull request by Jon Sneyers. Thanks!
  #45, #43

(taca)