Bug 1878807 - Run the custom-car toolchain jobs at 01:00 UTC. r=kshampur

Differential Revision: https://phabricator.services.mozilla.com/D200747

.cron.yml

@@ -117,7 +117,7 @@ jobs:
           - mozilla-central
       when:
           by-project:
-              mozilla-central: [{hour: 20, minute: 30}]
+              mozilla-central: [{hour: 01, minute: 0}]
 
     # For more context on this job, see:
     # https://github.com/mozsearch/mozsearch-mozilla#how-searchfoxorg-stays-up-to-date