Update dependencies and speed up iOS tests

This release holds the latest WDIO dependencies and iOS tests are also faster by using the iOS predicate string instead of XPATH.
This project already used accessibility ID's for 98% of the elements, the rest was using XPATH. By changing those selectors, see https://github.com/webdriverio/appium-boilerplate/pull/31/files, iOS tests run around 20% faster 🚀

Feature

Update the local app and browser capabilities to W3C standards

Feature

Add appium service

Bug fixes

This release holds:

• some bugfixes for the tests
• updates the configs with new devices
• refers to new apps