Update Wuffs version to 0.2.0-rc.1

Bug: skia:8235
Change-Id: Ia53348d620e1b9b6651ce5035dc4def02da67df6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/247156
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2 files changed