Update mypy requirement from 1.9.0 to 1.10.0

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@1.9.0...v1.10.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -39,7 +39,7 @@ pylint = "3.1.0"
 pytest = "8.1.1"
 pytest-cov = "5.0.0"
 coverage = "7.5.0"
-mypy = "1.9.0"
+mypy = "1.10.0"
 setuptools = ">65.5.1"
 sphinx = "7.3.7"
 sphinx-wagtail-theme = "6.3.0"