Bump mypy from 1.1.1 to 1.2.0 (#541)

Bumps [mypy](https://github.com/python/mypy) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v1.1.1...v1.2.0)

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

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

Author: dependabot[bot]

requirements-dev.txt

@@ -2,6 +2,6 @@
 
 docutils==0.19
 flake8==6.0.0
-mypy==1.1.1
+mypy==1.2.0
 Sphinx==6.1.3
 types-pygments==2.14.0.7