Add catbox owners to the OWNERS file

Test: N/A
Bug: 226980239
Change-Id: Ie7deb9f91b54eea8a473fb704148d080cef8b525
diff --git a/core/tasks/OWNERS b/core/tasks/OWNERS
index 594930d..372ff8b 100644
--- a/core/tasks/OWNERS
+++ b/core/tasks/OWNERS
@@ -1 +1,2 @@
 per-file art-host-tests.mk = dshi@google.com,dsrbecky@google.com,jdesprez@google.com,rpl@google.com
+per-file catbox.mk = smara@google.com,schinchalkar@google.com,kaneesh@google.com