perf: tweak schedule (#22)

- it starts to early in the morning, leading to failed checks
- it reaches to far into our working hours (we are at UTC+1)

Now it only provides update in the hour before our dailies, and in the
evening in the last two hours before the segments are hibernates

README.md

@@ -153,7 +153,7 @@ All major version bumps need to be triggered manually from the dependency dashbo
       "dependencyDashboardApproval": true
     }
   ],
-  "schedule": ["* 7-9,18-19 * * 1-5"]
+  "schedule": ["* 8,18-19 * * 1-5"]
 }
 ```
 

default.json

@@ -28,5 +28,5 @@
   "packageRules": [
     {"matchUpdateTypes": ["major"], "dependencyDashboardApproval": true}
   ],
-  "schedule": ["* 7-9,18-19 * * 1-5"]
+  "schedule": ["* 8,18-19 * * 1-5"]
 }