Bump mypy from 0.950 to 0.960 in /dependencies/default (#361)

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:production
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

dependencies/default/constraints.txt

@@ -6,7 +6,7 @@ hypothesis==6.46.9
 idna==3.3
 importlib-metadata==4.11.4
 iniconfig==1.1.1
-mypy==0.950
+mypy==0.960
 mypy-extensions==0.4.3
 outcome==1.1.0
 packaging==21.3