copr-be-dev: run the ping script on devel with the same cadence

That script is a no-op, so it doesn't hurt the performance nor the cloud
budget.

roles/copr/backend/tasks/copr-ping.yml

@@ -88,8 +88,8 @@
   ansible.builtin.cron:
     # NOTE: sync with CRON_PERIOD in roles/copr/backend/templates/copr-ping-check.py.j2
     name: build the ping package
-    minute: "{% if devel %}0{% else %}0,30{% endif %}"
-    hour: "{% if devel %}1{% else %}*{% endif %}"
+    minute: "0,30"
+    hour: "*"
     user: copr-ping
     job: "{{ ping_homedir }}/{{ ping_script }}"
   tags: copr_ping