Bump codecov from 2.1.8 to 2.1.9

Bumps [codecov](https://github.com/codecov/codecov-python) from 2.1.8 to 2.1.9.
- [Release notes](https://github.com/codecov/codecov-python/releases)
- [Changelog](https://github.com/codecov/codecov-python/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-python@2.1.8...v2.1.9)

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

Author: dependabot[bot]

requirements.txt

@@ -14,6 +14,6 @@ pytest-qt==3.3.0
 shiboken2==5.15.0
 wcwidth==0.2.5
 zipp==3.2.0
-codecov==2.1.8
+codecov==2.1.9
 coverage==5.2.1
 pytest-cov==2.10.1