chore(deps): update pre-commit hook myint/rstcheck to v6.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
myint/rstcheck	repository	patch	v6.2.0 -> v6.2.1

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

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Release Notes

myint/rstcheck (myint/rstcheck)

### [`v6.2.1`](https://togithub.com/myint/rstcheck/compare/v6.2.0...v6.2.1) [Compare Source](https://togithub.com/myint/rstcheck/compare/v6.2.0...v6.2.1)

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Configuration

📅 Schedule: Branch creation - "every weekday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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

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

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