gitea: template compose from role vars; bump to 28.2.0 / postgres 17.11 (WDWL-27)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ansible/roles/gitea/tasks/main.yml

@@ -15,9 +15,9 @@
 
 # ── Compose & env ──────────────────────────────────────────────────────────────
 
-- name: Deploy Gitea compose file from boilerplate
-  ansible.builtin.copy:
-    src: "{{ playbook_dir }}/../../boilerplates/gitea/compose.yaml"
+- name: Deploy Gitea compose file
+  ansible.builtin.template:
+    src: compose.yaml.j2
     dest: "{{ gitea_compose_dir }}/compose.yaml"
     owner: root
     group: root