Bump pytest from 5.1.2 to 5.3.5

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.1.2 to 5.3.5.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/5.1.2...5.3.5)

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

Pipfile

@@ -27,7 +27,7 @@ pygithub = "==1.43.8"
 pynput = "==1.6.5"
 pyperclip = "==1.7.0"
 pytesseract = "==0.3.0"
-pytest = "==5.1.2"
+pytest = "==5.3.5"
 python-dateutil = "==2.8.1"
 # Platform dependencies
 xlib = {platform_system = "== 'Linux'",version = "==0.21"}