pre-commit: Update to mypy v1.0

[cclauss]

Describe your change:

Mypy has finally reached v1.0.

• https://mypy.readthedocs.io/en/stable/

• [ ] Add an algorithm?

• [ ] Fix a bug or typo in an existing algorithm?

• [ ] Documentation change?

• [x] Change to testing infrastructure

Checklist:

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized.
• [x] I know that pull requests will not be merged if they fail the automated tests.
• [ ] This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• [ ] All new Python files are placed inside an existing directory.
• [ ] All filenames are in all lowercase characters with no spaces or dashes.
• [ ] All functions and variable names follow Python naming conventions.
• [ ] All function parameters and return values are annotated with Python type hints.
• [ ] All functions have doctests that pass the automated testing.
• [ ] All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
• [ ] If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[dhruvmanila]

I think pre-commit automatically updates the versions periodically, right? Why are we doing this manually then?

[cclauss]

Because this is an upgrade to v1.0 and I wanted to understand if there were breaking changes before I applied this upgrade to other repos that I work on.

[cclauss]

Fixed in #8141