Update to latest rive

Change-Id: I603b03b4359d5d18bf72bdefcedbc684e1b2f4d3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/548479
Commit-Queue: Florin Malita <fmalita@google.com>
Auto-Submit: Mike Reed <mike@reedtribe.org>
Reviewed-by: Florin Malita <fmalita@google.com>
6 files changed