[SCIM] add `RepresentationReferenceAttributeUpdatedEvent`

Hello 😃

How have you been?

A few months ago you added the ability to update the group name saved on a user whenever the group’s name is being updated.

Update events such as this are not being published to masstransit (like adding or removing a user from a group).

Can you please add a RepresentationReferenceAttributeUpdatedEvent and publish it in times such as updating a group’s name?

Kind regards Dan

[simpleidserver]

Good remark 😃 I made some changes in the master branch to publish the integration event RepresentationReferenceAttributeUpdatedEvent when the reference attribute is updated.

[danflomin]

Thanks !