Allowlist cross-db modification instances

- This was modifying external_pull_requests table within a Project
transaction

- This was modifying the ci_pipelines table within
ApplicationRecord.transaction.

ee/app/services/security/ingestion/ingest_report_slice_service.rb

@@ -32,9 +32,11 @@ module Security
       end
 
       def execute
+        ::Gitlab::Database::QueryAnalyzers::PreventCrossDatabaseModification.allow_cross_database_modification_within_transaction(url: 'URL TODO') do
           ApplicationRecord.transaction do
             TASKS.each { |task| execute_task(task) }
           end
+        end
 
         @finding_maps.map(&:vulnerability_id)
       end

lib/gitlab/import_export/project/object_builder.rb

@@ -14,10 +14,12 @@ module Gitlab
       # It also adds some logic around Group Labels/Milestones for edge cases.
       class ObjectBuilder < Base::ObjectBuilder
         def self.build(*args)
+          ::Gitlab::Database::QueryAnalyzers::PreventCrossDatabaseModification.allow_cross_database_modification_within_transaction(url: 'URL TODO') do
             ::Project.transaction do
               super
             end
           end
+        end
 
         def initialize(klass, attributes)
           super