Bump the dev-dependencies group with 2 updates

Bumps the dev-dependencies group with 2 updates: [mypy](https://github.com/python/mypy) and [pytest-cov](https://github.com/pytest-dev/pytest-cov).


Updates `mypy` from 1.19.1 to 1.20.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.1...v1.20.0)

Updates `pytest-cov` from 7.0.0 to 7.1.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v7.0.0...v7.1.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: pytest-cov
  dependency-version: 7.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -37,7 +37,7 @@ scripts.openapi-generator-cli = "openapi_generator_cli:cli"
 
 [dependency-groups]
 dev = [
-  "mypy>=0.991,<1.20",
+  "mypy>=0.991,<1.21",
   "natsort>=8.4,<9",
   "pre-commit>=2.20,<5",
   "pytest>=7.2.2,<10",