Bump multi_json from 1.14.1 to 1.15.0
Bump multi_json from 1.14.1 to 1.15.0

Bumps [multi_json](https://github.com/intridea/multi_json) from 1.14.1 to 1.15.0.
- [Release notes](https://github.com/intridea/multi_json/releases)
- [Changelog](https://github.com/intridea/multi_json/blob/master/CHANGELOG.md)
- [Commits](https://github.com/intridea/multi_json/compare/v1.14.1...v1.15.0)

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