Bump tomlkit from 0.5.5 to 0.5.7 in /docs (#90)
Bump tomlkit from 0.5.5 to 0.5.7 in /docs (#90)

Bumps [tomlkit](https://github.com/sdispater/tomlkit) from 0.5.5 to 0.5.7.
- [Release notes](https://github.com/sdispater/tomlkit/releases)
- [Changelog](https://github.com/sdispater/tomlkit/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sdispater/tomlkit/compare/0.5.5...0.5.7)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sobolevn/django-split-settings