Log Message:
devel/ruby-test-unit: update to 3.4.1

3.4.1 - 2021-04-19 {#version-3-4-1}

Fixes

* Fixed a bug that `setup`/`cleanup`/`teardown` with block may be
  overwritten by another `setup`/`cleanup`/`teardown` with
  block. It's caused only with Ruby 2.6 or earlier.
  [GitHub#179][Reported by akira yamada]

Thanks

* akira yamada