Update qbs submodule.

To HEAD of 1.3 branch.

Change-Id: I4812a7261cf65457ce3e3dd00be89d9b2c0fbdbb
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Debugger: Fix QRegion dumper on 32 bit for Qt < 5.4

Change-Id: I2554ae77154d88185120bf661f9e732485d92a28
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>