Bump mypy from 0.942 to 0.950 in /dependencies/default (#347)

Bumps [mypy](https://github.com/python/mypy) from 0.942 to 0.950.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.942...v0.950)

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

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

Author: dependabot[bot]

dependencies/default/constraints.txt

@@ -6,7 +6,7 @@ hypothesis==6.43.3
 idna==3.3
 importlib-metadata==4.11.3
 iniconfig==1.1.1
-mypy==0.942
+mypy==0.950
 mypy-extensions==0.4.3
 outcome==1.1.0
 packaging==21.3