Merge "set targetSDK level to 31" into sc-dev am: 22a360ec1f am: 8551720148 am: f49418e3fa

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/CellBroadcastReceiver/+/14943164

Change-Id: Ib54c416d7256c1e49d6713e99ca172a1e24facff