Bump saml2-js version to v3.0.1

Merged Louis requested to merge artonge/official-plugins:artonge-master-patch-44144 into master

Bump saml2-js version to v3.0.1.

Allow automatic version bump only for patches.

Version 2.1.0 or superior were breaking some XML output.

This is now resolved in v3.0.1: https://github.com/Clever/saml2/pull/229

Edited by Louis

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