Merge "Update taskbar icon size to match spec." into udc-dev am: 68135ebf

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23518318



Change-Id: If3ff64baa73ea4a5ef0783eda5187c0b5a57a0bd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>