fix: internal_exec_query not yet in rails

Author: BuonOmo

lib/active_record/connection_adapters/cockroachdb/referential_integrity.rb

@@ -88,7 +88,7 @@ def disable_referential_integrity
         # Copy/paste of the `#foreign_keys(table)` method adapted to return every single
         # foreign key in the database.
         def all_foreign_keys
-          fk_info = internal_exec_query(<<~SQL, "SCHEMA")
+          fk_info = exec_query(<<~SQL, "SCHEMA")
             SELECT CASE
               WHEN n1.nspname = current_schema()
               THEN ''