Bump minitest from 5.27.0 to 6.0.0

[dependabot]

Bumps minitest from 5.27.0 to 6.0.0.

Changelog

Sourced from minitest's changelog.

=== 6.0.0 / 2025-12-17

This is a major release. Read this.

Please give feedback here: minitest/minitest#1040

Oh god... here we go... (again)

• 8 deaths in the family(!!):

  • Deleted MiniTest and MiniTest::Unit::TestCase compatibility namespaces.
  • Deleted all use of Marshal for serialization.
  • Deleted maglev? and rubinius? guard methods. LOL.
  • Deleted all minitest/spec expectations from Object. Use _/value/expect.
  • Dropped minitest/mock.rb. This has been extracted to the minitest-mock gem.
  • assert_equal(nil, value) no longer allowed. Use assert_nil to be explicit.
  • Removed assert_send. Use assert_predicate or assert_operator.
  • Removed Minitest::Test#class_name.

• 7 major (oft incompatible) changes:

  • Big: Major refactored MT6's run path!
    • Minitest.__run -> Minitest.run_all_suites
    • Runnable.run -> Runnable.run_suite & Runnable.filter_runnable_methods
    • Runnable.run_one_method -> Runnable.run
    • Removed Minitest.run_one_method (might bring it back to raise?)
  • Removed deprecated ENV["N"] to specify number of parallel tests. Use MT_CPU.
  • Renamed +options[:filter]+ to +options[:include]+, added --include cmdline option.
    • --name is still handled, but that will be removed in the future.
  • Renamed Minitest::Runnable#test_order to #run_order.
  • If #message is passed a proc then that proc overrides all other output.
    • They are no longer chained!
    • And it does less for formatting of your output.
  • Removed reporter arg from with_info_handler as it has never(?) been used. (HACK?)
  • Plugin loading is now opt-in!
    • Require the plugin in your test_helper.
    • Or use Minitest.load :x
    • Or call Minitest.load_plugins for the old autoloading behavior.

• 5 additions:

  • Added minitest-sprint's minitest cmdline, now with line support!
  • Added minitest-bisect. Run with minitest --bisect or -b.
  • Added minitest-server.
  • Added minitest/complete to help with shell's tab-completion of tests.
  • Vendored latest version of path_expander.

• 5 other:

  • Bumped to ruby 3.2+.

... (truncated)

Commits

• 2f3d88e prepped for release
• 756f965 Add Hoe's :cov plugin and start to look at gaps
• 94a790e - Removed MT5's post_install_message.
• 8a50ebf - Bumped to ruby 3.2+
• 1fceffd - Removed obsolete version guards around Minitest::Result in reporters.
• c5adbd7 - Removed obsolete conditional for CompositeReporter#prerecord.
• 27ef422 + Added minitest/complete to help with shell's tab-completion of tests.
• 0c0c329 + Renamed options[:filter] to options[:include], added --include cmdline option.
• d597d05 + If message is passed a proc then that proc overrides all other output.
• 3c6300c + Assertions reuse themselves a lot more. Bumps assertion count in some places.
• Additional commits viewable in compare view

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