Changes to DELETE /tenants/self/invitations/:invitationId

added the pattern ^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$ to the path request parameter invitationId

for the path request parameter invitationId, the maxLength was set to 36

api operation id TenantInvitations.Delete removed and replaced with TenantInvitations_DeleteInvitation

api tag Tenants added

api tag TenantInvitations removed