Add awickham to OWNERS file

Change-Id: Ib7cec7caf615ed8974f09df4eb9d93ea117e756b
diff --git a/OWNERS b/OWNERS
index 7834396..353ac8e 100644
--- a/OWNERS
+++ b/OWNERS
@@ -15,6 +15,7 @@
 alexchau@google.com
 patmanning@google.com
 tsuharesu@google.com
+awickham@google.com
 
 per-file FeatureFlags.java, globs = set noparent
 per-file FeatureFlags.java = sunnygoyal@google.com, winsonc@google.com, adamcohen@google.com, hyunyoungs@google.com, captaincole@google.com