⬆️ Bump mypy from 1.19.1 to 1.20.1

Bumps [mypy](https://github.com/python/mypy) from 1.19.1 to 1.20.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.1...v1.20.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -85,7 +85,7 @@ testing-docutils = [
 
 [dependency-groups]
 mypy = [
-    "mypy==1.19.1",
+    "mypy==1.20.1",
     "types-urllib3",
     "sphinx~=8.2",
     "markdown-it-py~=4.0",