Bump gradle from 4.2.0-alpha03 to 4.2.0-alpha04
Bump gradle from 4.2.0-alpha03 to 4.2.0-alpha04

Bumps gradle from 4.2.0-alpha03 to 4.2.0-alpha04.

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
fobo66/BookcrossingMobile,fobo66/BookcrossingMobile