Update Appium XCUI driver installation version

Changed the installation command in `ios_navigation_tests.yml` to use the latest version of the Appium XCUI test driver (`xcuitest@next`) instead of a specific version (`xcuitest@5.14.1`). This update ensures access to the most recent features and fixes.

Author: StuartFerguson

.github/workflows/ios_navigation_tests.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Install Appium and Drivers
         run: |
           npm install -g appium --unsafe-perm=true --allow-root
-          appium driver install xcuitest@5.14.1 
+          appium driver install xcuitest@next
 
       - name: Start Appium Server
         run: |