fix(semaphore/configure): use ['keys'] subscript not .keys attribute

Jinja interpreted semaphore_config.keys as the dict method rather than
the 'keys' field, causing 'Invalid data passed to loop' failure. Bracket
subscript disambiguates.

ansible/roles/semaphore/tasks/configure.yml

@@ -99,7 +99,7 @@
           )
       }}
     status_code: [201, 204]
-  loop: "{{ semaphore_config.keys }}"
+  loop: "{{ semaphore_config['keys'] }}"
   loop_control:
     label: "{{ item.name }}"
   when: item.name not in (_semaphore_keys.json | map(attribute='name') | list)