Update dependency minitest to v6

Author: renovate[bot]

Gemfile

@@ -50,7 +50,7 @@ end
 
 group :test do
   gem 'climate_control'
-  gem 'minitest',  '< 6' # required for Rails 7.2.3
+  gem 'minitest',  '< 7' # required for Rails 7.2.3
   gem 'mocha', require: false
   gem 'simplecov', require: false
   gem 'simplecov-lcov', require: false

Gemfile.lock

@@ -242,7 +242,9 @@ GEM
       json-schema (>= 4.1)
     mini_mime (1.1.5)
     mini_portile2 (2.8.9)
-    minitest (5.27.0)
+    minitest (6.0.3)
+      drb (~> 2.0)
+      prism (~> 1.5)
     mocha (3.0.2)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.8.0)
@@ -464,7 +466,7 @@ DEPENDENCIES
   jquery-validation-rails
   listen
   lograge
-  minitest (< 6)
+  minitest (< 7)
   mitlibraries-theme!
   mocha
   net-imap