Bump mypy from 1.2.0 to 1.12.1 (#21)

Bumps [mypy](https://github.com/python/mypy) from 1.2.0 to 1.12.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.2.0...v1.12.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -29,7 +29,7 @@ dev = [
     "build>=1",
     "black==24.8.0",
     "flit==3.9.0",
-    "mypy==1.2.0",
+    "mypy==1.12.1",
     "ufmt==2.1.0",
     "usort==1.0.6",
 ]