Add BuildUpdate table to db:clean command (#3714)

Add a line to remove the unused rows from the `buildupdate` table where
the `build` table no longer has a reference to it in the `updateid`
column

Author: josephsnyder

app/Console/Commands/CleanDatabase.php

@@ -32,6 +32,7 @@ public function handle(): void
         DatabaseCleanupUtils::deleteUnusedRows('note', 'id', 'build2note', 'noteid');
         DatabaseCleanupUtils::deleteUnusedRows('testoutput', 'id', 'build2test', 'outputid');
         DatabaseCleanupUtils::deleteUnusedRows('uploadfile', 'id', 'build2uploadfile', 'fileid');
+        DatabaseCleanupUtils::deleteUnusedRows('buildupdate', 'id', 'build', 'updateid');
 
         Log::info('Deleting unused rows from `image`');
         $num_deleted = DB::delete('DELETE FROM image WHERE