Add new team member to OWNERS file

Add new team member, Marcelo

Ignore-AOSP-First: this is going into tm-qpr-dev
Bug: 246372721
Test: n/a
Change-Id: Ie7526bd08f15cd6a6a92cef71d5282dc45ffdd36
diff --git a/packages/SystemUI/OWNERS b/packages/SystemUI/OWNERS
index 546f0d2..a65f9be 100644
--- a/packages/SystemUI/OWNERS
+++ b/packages/SystemUI/OWNERS
@@ -7,6 +7,7 @@
 aaliomer@google.com
 adamcohen@google.com
 alexflo@google.com
+arteiro@google.com
 asc@google.com
 awickham@google.com
 beverlyt@google.com