update conventional-commit-types dependency

[skeggse]

Version 3.0.0 of conventional-commit-types removes the improvement commit type. For consistency with the conventional commits spec, we'd like to see this change in the commitizen CLI, and since it's a breaking change we'd need to update the dependency here. Would this be a breaking change here, too?

cc @AndersDJohnson

[skeggse]

See #105.

[zanza00]

I have a project that has both the prompt both the lint of commit messages (using commitlint) and when using the prompt by cz and choosing improvement, the lint fails which is frustrating.

I forced the v3 of conventional-commit-types in my package.json but that is not ideal

[AndersDJohnson]

I am not an active maintainer of this project but I support the change in #105. 👍

[skeggse]

Closed and released in 3.0.3 per #105.