Update MoltenVK to 43130ab27a8b2e9eaf9e28b70b64f14b20c3b7bb

Bring in the stencil buffer fix that just landed.

Bug: skia:7961
Change-Id: I9eb12836678dcb2e25b58f88e0bf27b40d77c2b1
Reviewed-on: https://skia-review.googlesource.com/130454
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
6 files changed