Update OWNERS file

-ddorwin, +jrummell

Thank you so much for everything, ddorwin!

Change-Id: I50bf1180a80bb50edfeab4ff5b8c59217dd2dc8c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/cdm/+/1634284
Reviewed-by: John Rummell <jrummell@chromium.org>
Reviewed-by: David Dorwin <ddorwin@chromium.org>
diff --git a/OWNERS b/OWNERS
index 554a4be..f09af45 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,2 @@
-ddorwin@chromium.org
+jrummell@chromium.org
 xhwang@chromium.org