[Satosa-dev] https://github.com/rohe/pysaml2/issues/463

The SAML backend breaks on loading metadata from a URL if it contains non-ASCII characters (https://github.com/rohe/pysaml2/issues/463) After analyzing the cause I found that this has already been fixed in pysaml2 since 4.4.0. My preferred option would be to nudge pysaml2 maintainers to release a new pypi version. It could save other developers from hunting bugs that have been fixed. If that is not feasible, the docker installation option should be changed to install the current version from github. Cheers, Rainer