Log Message:
devel/ruby-test-unit: update to 3.4.7

3.4.7 - 2021-09-14

Fixes

* Suppressed a warning on Ruby 2.  [GitHub#205][Patch by Kenichi Kamiya]

Thanks

Kenichi Kamiya

3.4.6 - 2021-09-11

Improvements

* Added support for tests that use Ractor.  Use Test::Unit::TestCase.ractor
  to declare that these tests use Ractor.

* Added --debug-on-failure option.

3.4.5 - 2021-09-04

Improvements

* Added more metadata to gemspec.  [GitHub#183][Patch by Kenichi Kamiya]

* Removed needless files from gem.  [GitHub#184][Patch by Kenichi Kamiya]

* Updated documents.
  [GitHub#191][GitHub#192][GitHub#193][GitHub#199][GitHub#200]
  [GitHub#201][Patch by Kenichi Kamiya]

Added assert_nothing_leaked_memory.

Fixes

* Fixed typos in documents.
  [GitHub#189][GitHub#190][GitHub#195][GitHub#197][Patch by Kenichi Kamiya]

Thanks

* Kenichi Kamiya