Quote function name

db/post_migrate/20210622041846_finalize_push_event_payloads_bigint_conversion.rb

@@ -42,7 +42,7 @@ class FinalizePushEventPayloadsBigintConversion < ActiveRecord::Migration[6.1]
       # regenerate the execution plan for it. This is to avoid type mismatch errors like
       # "type of parameter 15 (bigint) does not match that when preparing the plan (integer)"
       function_name = Gitlab::Database::UnidirectionalCopyTrigger.on_table(TABLE_NAME).name(:event_id, :event_id_convert_to_bigint)
-      execute "ALTER FUNCTION #{function_name} RESET ALL"
+      execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL"
 
       # Swap defaults
       change_column_default TABLE_NAME, :event_id, nil