message: Slightly increase D3D12 leak check threshold
  * We're now caching descriptor data so we deliberately allocate a bit more
  memory. This will still allow us to catch egregious leaks.
diff: @@ -11,7 +11,7 @@ class D3D12_Leak_Check(rdtest.TestCase):
  def check_capture(self):
  memory: int = rd.GetCurrentProcessMemoryUsage()
  - if memory > 500*1000*1000:
  + if memory > 600*1000*1000:
  raise rdtest.TestFailureException("Memory usage of {} is too high".format(memory))
  rdtest.log.success("Capture {} opened with reasonable memory ({})".format(self.demos_frame_cap, memory))
  