Update minitest requirement from ~> 5.0 to ~> 6.0 in /gem

Updates the requirements on [minitest](https://github.com/minitest/minitest) to permit the latest version.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.25.1...v6.0.6)

---
updated-dependencies:
- dependency-name: minitest
  dependency-version: 6.0.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gem/Gemfile.lock

@@ -7,16 +7,20 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
+    drb (2.2.3)
     json (2.8.0)
     language_server-protocol (3.17.0.3)
     lint_roller (1.1.0)
     lru_redux (1.1.0)
-    minitest (5.25.1)
+    minitest (6.0.6)
+      drb (~> 2.0)
+      prism (~> 1.5)
     parallel (1.26.3)
     parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
     phlex (2.1.2)
+    prism (1.9.0)
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.2.1)
@@ -59,7 +63,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  minitest (~> 5.0)
+  minitest (~> 6.0)
   phlex (~> 2.1, >= 2.1.2)
   rake (~> 13.0)
   rouge (~> 4.2.0)

gem/ruby_ui.gemspec

@@ -20,5 +20,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency "tailwind_merge", "~> 0.12"
   s.add_development_dependency "rake", "~> 13.0"
   s.add_development_dependency "standard", "~> 1.0"
-  s.add_development_dependency "minitest", "~> 5.0"
+  s.add_development_dependency "minitest", "~> 6.0"
 end