[eduVPN-deploy] Update discovery service "php-saml-ds"

[François Kooman]

Hi all,

The following component(s) had a new release:

* php-saml-ds: 2.0.0 [1]
* php-saml-ds-artwork-eduVPN [2]

**ONLY** in case you are using SAML authentication, *AND* the provided
php-saml-ds component as documented [3], an update was released that
refactored a lot of code.

It should be a "drop-in" replacement for version 1 unless you modified
the templates manually. If that's the case you'll lose your template
modifications and have to recreate them.

Let me know if you have any questions or remarks!

Regards,
François

[1] https://github.com/fkooman/php-saml-ds/blob/master/CHANGES.md
[2] https://github.com/eduvpn/disco-artwork/blob/master/CHANGES.md
[3] https://github.com/eduvpn/documentation/blob/master/SAML.md#discovery