AuthnContextClassRef - Unspecified value using weird constant.

[thomasjosif]

Hi,

I was integrating this idp with a service that requires me to have an AuthnContextClassRef, it by default accepts:
urn:oasis:names:tc:SAML:2.0:ac:classes:unspecified which seems pretty standard.

But in this package for some reason the default value found here

laravel-samlidp/src/Jobs/SamlSso.php

Line 110 in 516db46

->setAuthnContextClassRef(SamlConstants::NAME_ID_FORMAT_UNSPECIFIED)

is:
urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified

Is there any rhyme or reason behind this or would it be possible for me to make a PR to change that line to use this constant found here?
https://github.com/lightSAML/lightSAML/blob/b5e37b001c68da82bea8b2ca30230598368c51d1/src/LightSaml/SamlConstants.php#L69

Thanks!

[upwebdesign]

@thomasjosif if you would like to make a PR, please do. I will review as soon as I am able!