Upgrade postgres-backup (v17-2 -> v17-3)

requirements.yml

@@ -43,7 +43,7 @@
   version: v17.2-3
   name: postgres
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-postgres-backup.git
-  version: v17-2
+  version: v17-3
   name: postgres_backup
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-prometheus.git
   version: v2.55.1-2