fix: run cities labeler from its release image

Pull git.cosocial.info/cosocial-canada/atproto-cosocial-labeler instead of
cloning and building on the server, which took several minutes per deploy.
Watchtower picks up new :latest releases.

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

playbook.yml

@@ -192,16 +192,6 @@
       when: pds_operator_enabled is defined and pds_operator_enabled | bool
       notify: restart operator
 
-    - name: Clone cities labeler repo
-      git:
-        repo: "{{ pds_cities_repo }}"
-        dest: "{{ pds_data_dir }}/cities"
-        version: "{{ pds_cities_version | default('main') }}"
-        update: yes
-        force: no
-      when: pds_cities_enabled is defined and pds_cities_enabled | bool
-      notify: restart cities
-
     - name: Create cities labeler data directory
       file:
         path: "{{ pds_data_dir }}/cities/data"
@@ -315,4 +305,4 @@
       shell: cd {{ pds_data_dir }}/operator && docker compose up -d --build
 
     - name: restart cities
-      shell: cd {{ pds_data_dir }}/cities && docker compose up -d --build
+      shell: cd {{ pds_data_dir }}/cities && docker compose pull && docker compose up -d