Update old references to com.devture.ansible.role.postgres & com.devture.ansible.role.traefik

Provoked by https://github.com/mother-of-all-self-hosting/mash-playbook/pull/280

roles/custom/matrix-synapse/tasks/update_user_password.yml

@@ -12,7 +12,7 @@
 
 - name: Fail if not using integrated Postgres database
   ansible.builtin.fail:
-    msg: "This command is working only when Postgres is installed via the the integrated com.devture.ansible.role.postgres role"
+    msg: "This command is working only when Postgres is installed via the the integrated ansible-role-postgres role"
   when: "not postgres_enabled | bool"
 
 - name: Ensure Postgres is started