devel/ruby-mocha: update to 2.0.4

2.0.3 (2023-06-10)

External changes

* Fix BacktraceFilter to handle special characters (e242033f, #592) - thanks
  to @casperisfine

Internal changes

* Add Ruby v3.1 to the CircleCI build (3e460489)
* DRY up regexp_matches test (ae9fed4a)
* Fix regexp_matches tests in Ruby v3.2 (26b106a5, #590)
* Use Ruby 1.9 hash syntax (8bc0ad2f, #598, #537) - thanks to @herwinw
* Simplify storage of MOCHA_OPTIONS (b70507a1, #600) - thanks to @herwinw
* Pin JRuby to v9.3.9.0 in CircleCI builds (b8e6d064, #591)
* Rubocop: enable Style/FormatStringToken cop (089a688e, #603) - thanks to
  @herwinw
* Remove Ruby version check from RespondsLikeTest (21583129)
* Add Ruby v3.2 to CircleCI build (f7e17636, #601)
* Use Ruby v2.6 vs v2.2 to run lint CI job (af40b7db)
* Pin yard version to v0.9.28 to avoid ArgumentError (12f1eef7)
* Revert "Pin JRuby to v9.3.9.0 in CircleCI builds" (4f5bb2f0, #591)
* Remove invalid CircleCI token from badge URL (7078e76a)
* Revert "Pin yard version to v0.9.28 to avoid ArgumentError" (7c6c10c5, #609)
* Remove Google Analytics tracking code (2279c49d, #612)
* Update MIT-LICENSE.md (48162b4e)
* Update COPYING.md (f3152376)

2.0.4 (2023-06-10)

Internal changes

* Update README.md

(taca)