DeskClock - Moved the android:targetSdkVersion to 25 to fix "Clock has stopped" message displayed when Alarm trigger. am: e88d40eece am: f83beccc88 am: df9de353bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/DeskClock/+/12661641

Change-Id: Ie9cbf4b17553f0374b7375856a75696066d38473