[VTS] Update SetDisplayBrightness test item am: 70d2ef6b34 am: f43004efcf

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2883951

Change-Id: Ib6dd08b218e4bf0bf1cb40dcf850928fb147f907
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>