Add an OWNERS file for GeoTZ am: 6721471349

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/GeoTZ/+/13418766

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6dfd689150e83a7c97d72a00a7a038a66ca2e53a