Disable statement timeout explicitly

We don't have support for a covering index yet, so need to do this
manually

db/post_migrate/20210505092746_create_partial_covering_index_for_pending_builds.rb

@@ -9,13 +9,16 @@ class CreatePartialCoveringIndexForPendingBuilds < ActiveRecord::Migration[6.0]
   NEW_INDEX = 'index_ci_builds_runner_id_pending_covering'
 
   def up
+    disable_statement_timeout do
       execute "CREATE INDEX CONCURRENTLY #{NEW_INDEX} ON ci_builds (runner_id, id) INCLUDE (project_id) WHERE status = 'pending' AND type = 'Ci::Build'" unless index_exists_by_name?(:ci_builds, NEW_INDEX)
+    end
 
     remove_concurrent_index_by_name :ci_builds, EXISTING_INDEX
   end
 
   def down
     add_concurrent_index :ci_builds, :runner_id, where: "status = 'pending' AND type = 'Ci::Build'", name: EXISTING_INDEX
+
     remove_concurrent_index_by_name :ci_builds, NEW_INDEX
   end
 end