Bump mypy from 1.1.1 to 1.2.0

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] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -95,7 +95,7 @@ pytest-cov = "*"
 responses = "*"
 strict-rfc3339 = "^0.7"
 webob = "*"
-mypy = "^1.1"
+mypy = "^1.2"
 starlette = "^0.26.1"
 httpx = "^0.24.0"