Update mypy requirement from ==1.11.* to ==1.13.*

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@v1.11...v1.13.0)

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

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

requirements-test.txt

@@ -1,4 +1,4 @@
 coverage == 7.6.*
-mypy == 1.11.*
+mypy == 1.13.*
 pre-commit == 4.0.*
 tox == 4.22.*