Chore: Upgrade flutter packages #910

Job	Run time
lint	1m 56s
build-irmagobridge-ios	5m 41s
build-irmagobridge-android	2m 41s
unit-test	1m 40s
build-prototypes-android	5m 48s
build-app-android (alpha, apk)	5m 42s
build-integration-test-android	5m 44s
build-app-android (alpha, appbundle)	6m 0s
build-app-android (beta, apk)	5m 55s
build-app-android (beta, appbundle)	6m 10s
build-app-ios-alpha	6m 41s
build-integration-test-ios	27m 16s
integration-test-android	21m 40s
integration-test-ios (activity_test_ios_tests.zip)	7m 5s
integration-test-ios (credential_store_test_ios_tests.zip)	4m 48s
integration-test-ios (disclosure_session_empty_app_scenarios_test_ios_tests.zip)	7m 16s
integration-test-ios (disclosure_session_filled_app_scenarios_test_ios_tests.zip)	8m 0s
integration-test-ios (disclosure_session_special_scenarios_test_ios_tests.zip)	8m 13s
integration-test-ios (enroll_test_ios_tests.zip)	6m 6s
integration-test-ios (home_test_ios_tests.zip)	5m 44s
integration-test-ios (issuance_test_ios_tests.zip)	5m 55s
integration-test-ios (issue_wizard_test_ios_tests.zip)	5m 27s
integration-test-ios (more_tab_test_ios_tests.zip)	6m 45s
integration-test-ios (login_test_ios_tests.zip)	9m 14s
integration-test-ios (notifications_test_ios_tests.zip)	6m 1s
integration-test-ios (settings_test_ios_tests.zip)	9m 51s
integration-test-ios-summary	1s
	3h 13m 20s

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