⬆️ Update appium-python-client requirement

Updates the requirements on [appium-python-client](https://github.com/appium/python-client) to permit the latest version.
- [Release notes](https://github.com/appium/python-client/releases)
- [Changelog](https://github.com/appium/python-client/blob/master/CHANGELOG.rst)
- [Commits](appium/python-client@v2.9.0...v4.0.1)

---
updated-dependencies:
- dependency-name: appium-python-client
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

setup.py

@@ -13,7 +13,7 @@
     "opencv-python~=4.9",
     "tesseract~=0.1",
     "pytesseract~=0.3",
-    "appium-python-client~=2.9",
+    "appium-python-client>=2.9,<5.0",
 ]
 
 extras_require = {