Fix dependency break (serhatbolsu#417)

Python-Appium-Client 4.0.0 has removed certain features installation
breaks currently as current codebase still uses those removed features
like TouchAction

Author: rasjani

setup.py

@@ -38,7 +38,7 @@
           'decorator >= 3.3.2',
           'robotframework >= 2.6.0',
           'docutils >= 0.8.1',
-          'Appium-Python-Client >= 2.7.1',
+          'Appium-Python-Client >= 2.7.1, < 4.0.0',
           'selenium >= 4.0.0',
           'kitchen >= 1.2.4',
           'six >= 1.10.0'