Bump pytest-runner from 5.2 to 5.3.1

Bumps [pytest-runner](https://github.com/pytest-dev/pytest-runner) from 5.2 to 5.3.1.
- [Release notes](https://github.com/pytest-dev/pytest-runner/releases)
- [Changelog](https://github.com/pytest-dev/pytest-runner/blob/main/CHANGES.rst)
- [Commits](pytest-dev/pytest-runner@5.2...v5.3.1)

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

setup.py

@@ -13,7 +13,7 @@
 
 requirements = ["pyserial==3.4"]
 
-setup_requirements = ["pytest-runner==5.2"]
+setup_requirements = ["pytest-runner==5.3.1"]
 
 test_requirements = ["pytest==5.3.5"]