Changes to Upsert up to 50 users at a time based on nectar_id (recommended), email, or employee_id

added the new optional request property items/term_date

added the optional property allOf[#/components/schemas/UsersResponse]/data/users/items/anyOf[#/components/schemas/ExpandedUser]/allOf[subschema #2]/term_date to the response with the 200 status