⬆️ Upgrade pysaml2 to 7.4.2

[mvbattista]

Add support for xmlsec1 v.1.3.x

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[mvbattista]

Mentioning @mostafa for review.

[mostafa]

Hey @mvbattista,

Thanks for your contribution! New versions of pysaml2 are not backward compatible with Python 3.7 and 3.8, so I have to keep this back until we remove support for those as well. Plus, it breaks the builds.

[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[mostafa]

Hey @mvbattista,

Thanks for your contribution! I have cherry-picked your commit in #218 and I'll close this.