Bump pytest-flake8 from 1.0.4 to 1.0.5

Bumps [pytest-flake8](https://github.com/tholo/pytest-flake8) from 1.0.4 to 1.0.5.
- [Release notes](https://github.com/tholo/pytest-flake8/releases)
- [Changelog](https://github.com/tholo/pytest-flake8/blob/master/CHANGELOG)
- [Commits](tholo/pytest-flake8@1.0.4...1.0.5)

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

test-requirements.txt

@@ -41,7 +41,7 @@ pytest-aiohttp==0.3.0     # via -r test-requirements.in
 pytest-asyncio==0.10.0    # via -r test-requirements.in
 pytest-cov==2.8.1         # via -r test-requirements.in
 pytest-django==3.9.0      # via -r test-requirements.in
-pytest-flake8==1.0.4      # via -r test-requirements.in
+pytest-flake8==1.0.5      # via -r test-requirements.in
 pytest-mock==3.0.0        # via -r test-requirements.in
 pytest-mypy==0.6.1        # via -r test-requirements.in
 pytest-sugar==0.9.2       # via -r test-requirements.in