Bump gradle from 4.0.0-alpha06 to 4.0.0-alpha07
Bump gradle from 4.0.0-alpha06 to 4.0.0-alpha07

Bumps gradle from 4.0.0-alpha06 to 4.0.0-alpha07.

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