Update Skia milestone to 128

Change-Id: Ic226b706d0c0fe1dd2ac0026747358859a87a59d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/864638
Reviewed-by: Heather Miller <hcm@google.com>
diff --git a/include/core/SkMilestone.h b/include/core/SkMilestone.h
index 0567130..72ce9e5 100644
--- a/include/core/SkMilestone.h
+++ b/include/core/SkMilestone.h
@@ -5,5 +5,5 @@
  * found in the LICENSE file.
  */
 #ifndef SK_MILESTONE
-#define SK_MILESTONE 127
+#define SK_MILESTONE 128
 #endif