ATH-UC-24: Change a mandate

Basic flow

Flow	Specification
	Use case ID	ATH-UC-24-BF
	Use case name	Change a mandate of a user
	Actors	Citizen HCP
	Short Description	In order to change a mandate, the user should do a global logout and should authenticate him/herself a second time.
	Priority	1 (High) Must have: The system must implement this goal/ assumption to be accepted.
	Pre-Conditions	The user has an active session in the IDP with an old mandate
	Post-Conditions	The user has a new open session with the new mandate
	Steps (basic flow)	0
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	Exceptions (exception flows)
	Frequency	Every time the user wants to change the mandate