Bump pytest from 5.4.1 to 5.4.3

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.1 to 5.4.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.4.1...5.4.3)

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

Author: dependabot[bot]

requirements.txt

@@ -9,7 +9,7 @@ py==1.8.1
 pycodestyle==2.5.0
 pyparsing==2.4.7
 PySide2==5.14.2
-pytest==5.4.1
+pytest==5.4.3
 pytest-qt==3.3.0
 shiboken2==5.14.2
 wcwidth==0.1.9