build(deps): bump mypy from 1.5.1 to 1.6.1

Bumps [mypy](https://github.com/python/mypy) from 1.5.1 to 1.6.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.5.1...v1.6.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -49,7 +49,7 @@ _ = "returns.contrib.hypothesis._entrypoint"
 python = ">= 3.8.1,<4.0"
 
 typing-extensions = ">=4.0,<5.0"
-mypy = { version = ">=1.5,<1.6", optional = true }
+mypy = { version = ">=1.5,<1.7", optional = true }
 
 [tool.poetry.dev-dependencies]
 anyio = "^4.0"