chore(deps-dev): bump pytest from 6.1.2 to 6.2.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.1.2 to 6.2.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.1.2...6.2.0)

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

dev-requirements.txt

@@ -1,7 +1,7 @@
 pydantic_openapi_helper==0.2.4
 coverage==5.3
 coveralls==2.2.0
-pytest==6.1.2
+pytest==6.2.0
 pytest-cov==2.10.1
 attrs~=20.3.0
 Sphinx==3.3.1