Final Call for mapping "`role` attribute has valid value" to 1.3.1

Hello ACT rules,

As decided during the last CG call, we’re trying to map rule "`role` attribute has valid value" to 1.3.1, under the assumption that elements with a role attribute have some sort of presentation conveying the intended role.
This is Final Call for this change.

https://github.com/act-rules/act-rules.github.io/pull/1537

Final Call ends on January 28th.


Jean-Yves Moyen
Senior Software Engineer


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