Build(deps): Bump pytest from 5.3.5 to 5.4.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.3.5 to 5.4.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.3.5...5.4.1)

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

requirements/ci-wheel.txt

@@ -1,6 +1,6 @@
 -r flake.txt
 coverage==5.0.4
-pytest==5.3.5
+pytest==5.4.1
 pytest-asyncio==0.10.0
 pytest-cov==2.8.1
 tox==3.14.6

requirements/wheel.txt

@@ -1,3 +1,3 @@
-pytest==5.3.5
+pytest==5.4.1
 pytest-asyncio==0.10.0
 twine==3.1.1