This update for gnuhealth, tryton contains the following bug fixes:

- Fix error when signing the death certificate (health_crypto)

Tryton packages were updated to the following versions, with minor code level bug fixes:

- proteus 4.2.1
- tryton 4.2.8
- trytond 4.2.7
- trytond_account 4.2.4
- trytond_company 4.2.2
- trytond_product 4.2.2
- trytond_purchase 4.2.3
- trytond_purchase_request 4.2.2
- trytond_stock 4.2.5