Update gradle and build dependencies

Julien LepillerSat Apr 25 23:49:34+0200 2020

06f5bbe

nani/app/furiganatextview/src
namelast commitdate
androidTest/Add furiganaMon Apr 15 20:09:48+0200 2019
main/Add furiganaMon Apr 15 20:09:48+0200 2019
test/Add furiganaMon Apr 15 20:09:48+0200 2019