Chore: upgrade to Flutter 3.24.3 and XCode 16.0 #878

Job	Run time
lint	4m 10s
build-irmagobridge-android	2m 33s
build-irmagobridge-ios	9m 9s
unit-test	1m 27s
build-prototypes-android	5m 25s
build-integration-test-android	5m 43s
build-app-android (alpha, apk)	5m 34s
build-app-android (alpha, appbundle)	6m 48s
build-app-android (beta, apk)	6m 29s
build-app-android (beta, appbundle)	6m 25s
integration-test-android	21m 4s
build-app-ios-alpha	11m 58s
build-integration-test-ios	14m 38s
integration-test-ios	10m 59s
	1h 52m 22s

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