Log Message:
devel/ruby-test-unit: update to 3.5.8

3.5.8 (2023-05-12)

Improvements

* doc: Improved document for multi Ractor mode.
  GH-226
  [Patch by Luke Gruber]

* doc: Updated minitest's URL.
  GH-228
  [Patch by Koichi ITO]

* UI: console: Added --progress-style option.

* UI: console: Compacted --verbose=important-only output..

* UI: console: Changed the default output level to important-only
  on GitHub Actions.

Thanks

* Luke Gruber
* Koichi ITO