Bump mypy from 0.950 to 0.960

Bumps [mypy](https://github.com/python/mypy) from 0.950 to 0.960.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.950...v0.960)

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

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

Author: dependabot[bot]

poetry.lock

@@ -27,7 +27,7 @@ pytz = ">=2021.3,<2023.0"
 pytest = "^7.1.2"
 coverage = {extras = ["toml"], version = "^6.3"}
 safety = "^1.10.3"
-mypy = "^0.950"
+mypy = "^0.960"
 typeguard = "^2.13.2"
 xdoctest = {extras = ["colors"], version = "^1.0.0"}
 sphinx = "^4.3.2"