Add sarahchin to OWNERS

Test: no test
Change-Id: Ia0a02c290cfd2a078e701fc316263d7356a490cc
diff --git a/OWNERS b/OWNERS
index 1ef8344..5be6fe5 100644
--- a/OWNERS
+++ b/OWNERS
@@ -11,3 +11,4 @@
 [email protected]
 [email protected]
 [email protected]
[email protected]
\ No newline at end of file