Changes to List Contacts

removed FilterExpression subschema #1 from the filters request property anyOf list

the include_custom_fields request property default value changed from true to false

added FilterExpression subschema #1 to the filters request property oneOf list

added the optional property data/items/account_name to the response with the 200 status

added the optional property data/items/last_activity_at to the response with the 200 status

added the optional property data/items/last_activity_type to the response with the 200 status

added the optional property data/items/last_inbound_at to the response with the 200 status

added the optional property data/items/last_inbound_type to the response with the 200 status

added the optional property data/items/last_outbound_at to the response with the 200 status

added the optional property data/items/last_outbound_type to the response with the 200 status