Update qbs submodule.

To HEAD of 1.3 branch.

Change-Id: I4822fd3613eba0be302f1190b5ea2ba05a210b1f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Debugger: Make simple test compile with old Qt and MSVC

Change-Id: Ibef0886f059a4807af9ad0e7922b37835da75efb
Reviewed-by: hjk <hjk121@nokiamail.com>