build(deps): bump pytest from 6.2.2 to 6.2.3

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.2 to 6.2.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.2...6.2.3)

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

requirements.txt

@@ -16,7 +16,7 @@ bpython
 
 # Testing
 # ----------------------------------------------------------------------------
-pytest==6.2.2
+pytest==6.2.3
 pytest-cookies==0.5.1
 pytest-cov==2.10.1
 pytest-factoryboy==2.0.3