Use ConnectionPool#schema_migration in Rails 7.2

See rails/rails#51162 for details.

spec/support/paper_trail_spec_migrator.rb

@@ -21,7 +21,7 @@ def initialize
   def migrate
     ::ActiveRecord::MigrationContext.new(
       @migrations_path,
-      ::ActiveRecord::Base.connection.schema_migration
+      schema_migration
     ).migrate
   end
 
@@ -45,6 +45,14 @@ def generate_and_migrate(generator, generator_invoke_args)
 
   private
 
+  def schema_migration
+    if Rails::VERSION::STRING >= '7.2'
+      ::ActiveRecord::Base.connection_pool.schema_migration
+    else
+      ::ActiveRecord::Base.connection.schema_migration
+    end
+  end
+
   def dummy_app_migrations_dir
     Pathname.new(File.expand_path("../dummy_app/db/migrate", __dir__))
   end