Fix ambiguous created_at column for pipeline_configuration_full_path

Currently this lookup joins the 'compliance_framework_settings' table with the 'compliance management_framework' and orders by 'created_at'. However, 'created_at' exists on both tables so the query throws a "'created_at' is ambiguous" error. Specifying the table with this MR.

Changelog: fixed
EE: true

ee/app/models/ee/project.rb

@@ -507,7 +507,7 @@ def pipeline_configuration_full_path
         compliance_framework_settings
           .joins(:compliance_management_framework)
           .where.not(compliance_management_framework: { pipeline_configuration_full_path: nil })
-          .order(created_at: :asc)
+          .order('project_compliance_framework_settings.created_at' => :asc)
           .pick(:pipeline_configuration_full_path)
       end