build(deps-dev): bump phpunit/phpunit from 7.3.0 to 7.3.1 (#1665)
build(deps-dev): bump phpunit/phpunit from 7.3.0 to 7.3.1 (#1665)

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 7.3.0 to 7.3.1.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-6.5.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/7.3.0...7.3.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
monicahq/monica,monicahq/monica