chore(deps): update dependency mypy to v0.812

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mypy (source, changelog)	==0.800 -> ==0.812

---

Release Notes

python/mypy

### [`v0.812`](https://togithub.com/python/mypy/compare/v0.800...v0.812) [Compare Source](https://togithub.com/python/mypy/compare/v0.800...v0.812)

---

Renovate configuration

:date: Schedule: "every weekend" (UTC).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.