fix(ci): point flutter app URLs to v0.0.33 in functional tests

The previous latest release (0.0.34) of the appium-flutter-server repository
no longer has the app-debug.apk and ios.zip release assets, causing CI end-to-end
jobs to fail with 404s when attempting to download them. Pinned the asset URLs to
the 0.0.33 release where they actually exist to resolve this.

Author: Dor-bl

.github/workflows/functional-test.yml

@@ -245,8 +245,8 @@ jobs:
       XCODE_VERSION: 16.4
       IOS_VERSION: 18.5
       IPHONE_MODEL: iPhone 16
-      FLUTTER_ANDROID_APP: "https://github.com/AppiumTestDistribution/appium-flutter-server/releases/latest/download/app-debug.apk"
-      FLUTTER_IOS_APP: "https://github.com/AppiumTestDistribution/appium-flutter-server/releases/latest/download/ios.zip"
+      FLUTTER_ANDROID_APP: "https://github.com/AppiumTestDistribution/appium-flutter-server/releases/download/0.0.33/app-debug.apk"
+      FLUTTER_IOS_APP: "https://github.com/AppiumTestDistribution/appium-flutter-server/releases/download/0.0.33/ios.zip"
       PREBUILT_WDA_PATH: ${{ github.workspace }}/wda/WebDriverAgentRunner-Runner.app
 
     steps: