chore: drop eol python3.9 #698

Job	Run time
ios_test (test/functional/ios/safari_tests.py, func_test_ios1)	10m 0s
flutter_e2e_test (macos-15, flutter-ios)	6m 43s
android_test (test/functional/android/appium_service_tests.py test/functional/android/chrome_test...	3m 47s
flutter_e2e_test (ubuntu-latest, flutter-android)	4m 47s
	25m 17s

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