"improvement" offered as an option but not in enum

When using git cz, one option for a type to select is "improvement", but this fails the enum check

```

husky > commit-msg hook failed (add --no-verify to bypass)
git exited with error code 1
kris@Kriss-MacBook-Pro cent-admin % git cz
cz-cli@4.0.3, cz-conventional-changelog@3.0.1

? Select the type of change that you're committing:
revert: Reverts a previous commit
feat: A new feature
fix: A bug fix
❯ improvement: An improvement to a current feature
docs: Documentation only changes

⧗ input: improvement(employers): added new subscriptions
✖ type must be one of [build, chore, ci, docs, feat, fix, perf, refactor, revert, style, test] [type-enum]

✖ found 1 problems, 0 warnings
ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

```