Update dependency postgres_backup to v17-4

requirements.yml

@@ -46,7 +46,7 @@
   version: v17.5-0
   name: postgres
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-postgres-backup.git
-  version: v17-3
+  version: v17-4
   name: postgres_backup
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-prometheus.git
   version: v3.4.2-0