Assign bulkTimers a parent

The parent/child relationship is not used to manage memory.
It's only used to keep the objects together when moving them between
threads (so that the entire subtree is moved by moveToThread).
That's not the case here, but it's good practice.

Reference: https://www.kdab.com/qobject_ownership_propagate_const/

lib/Emulation.h

@@ -510,8 +510,8 @@ private slots:
 private:
   bool _usesMouse;
   bool _bracketedPasteMode;
-  QTimer _bulkTimer1;
-  QTimer _bulkTimer2;
+  QTimer _bulkTimer1{this};
+  QTimer _bulkTimer2{this};
 
 };