Update cron settings (#34)

Clear the crontab on every deploy, to make sure only the entires
mentioned in the playbook are installed.
Adjust timing a bit.

Author: artcz

deploy/playbooks/04_cron.yml

@@ -2,18 +2,21 @@
   hosts: intbot_app
 
   tasks:
+    - name: "Wipe user's crontab"
+      command: crontab -r
+
     - name: "Download pretalx data once a day"
       ansible.builtin.cron:
-        name: "Download pretalx data once a day at 05:05am"
+        name: "Download pretalx data once a day at 06:05am"
         minute: "5"
-        hour: "5"
+        hour: "6"
         job: "make prod/cron/pretalx"
 
     - name: "Download pretix data once a day"
       ansible.builtin.cron:
-        name: "Download pretix data once a day at 06:05am"
+        name: "Download pretix data once a day at 07:05am"
         minute: "5"
-        hour: "6"
+        hour: "7"
         job: "make prod/cron/pretix"
 
     - name: "Schedule standup message on Monday morning"