* Fix signing key selection order when key rotation is enabled via
SECRET_KEY_FALLBACKS. GHSA-4grg-w6v8-c28g
* Fix type hint for cli_runner.invoke. #5645
* flask --help loads the app and plugins first to make sure all
commands are shown. #5673
* Mark sans-io base class as being able to handle views that return
AsyncIterable. This is not accurate for Flask, but makes typing
easier for Quart. #5659
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:flask/python-Flask?expand=0&rev=52
