nose==1.3.7
mock==3.0.5
six==1.12.0
unittest2==1.1.0

nose==1.3.7
mock==3.0.5
six==1.13.0
unittest2==1.1.0

Bump six from 1.12.0 to 1.13.0
Bump six from 1.12.0 to 1.13.0

Bumps [six](https://github.com/benjaminp/six) from 1.12.0 to 1.13.0.
- [Release notes](https://github.com/benjaminp/six/releases)
- [Changelog](https://github.com/benjaminp/six/blob/master/CHANGES)
- [Commits](https://github.com/benjaminp/six/compare/1.12.0...1.13.0)

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