Bump pytest from 5.4.3 to 6.0.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.3 to 6.0.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.4.3...6.0.1)

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

Author: dependabot[bot]

requirements.txt

@@ -9,7 +9,7 @@ py==1.9.0
 pycodestyle==2.6.0
 pyparsing==2.4.7
 PySide2==5.15.0
-pytest==5.4.3
+pytest==6.0.1
 pytest-qt==3.3.0
 shiboken2==5.15.0
 wcwidth==0.2.5