[ilAdmins] OpenID Connect: "Implicit Flow" -> Authorization Code Flow"

Dear administrators,

we have changed the supported "OpenID Connect" flow from "Implicit Flow" to Authorization Code Flow". Reasons for this change are the deprecation[1] of the standard and security concerns[2] regarding the "Implicit Flow". The JourFixe decided to support the change[3] to be made for ILIAS 8.5 and ILIAS 7.26.

Best regards, Per Pascal & Michael

[1] https://oauth.net/2/grant-types/implicit/ [2] https://datatracker.ietf.org/doc/html/draft-ietf-oauth-browser-based-apps#na... [3] https://docu.ilias.de/goto_docu_wiki_wpage_8022_1357.html