Update leakcanary to 1.6.2
Update leakcanary to 1.6.2

Change-Id: I7953d0e690a58bd17755e3bacfb8bfe51a5d2463

dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,dbrant/apps-android-wikipedia,dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,dbrant/apps-android-wikipedia,dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,wikimedia/apps-android-wikipedia