Fix migration check method call arguments

lib/tasks/check_for_pending_migrations.rake

@@ -12,7 +12,7 @@ namespace :db do
     )
       warn('Skipping pending migration check, idp_run_migrations=true')
     else
-      ActiveRecord::Migration.check_all_pending!(ActiveRecord::Base.connection)
+      ActiveRecord::Migration.check_all_pending!
     end
   end
 end

spec/lib/tasks/check_for_pending_migrations_rake_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+require 'rake'
+
+RSpec.describe 'check for pending migrations rake tasks' do
+  before do
+    Rake.application.rake_require 'tasks/check_for_pending_migrations'
+    Rake::Task.define_task(:environment)
+  end
+
+  describe 'db:check_for_pending_migrations' do
+    it 'runs successfully' do
+      Rake::Task['db:check_for_pending_migrations'].invoke
+    end
+  end
+end