Increase pod age threshold in appsettings.json

Updated the `MaxMinutesOldForExistingPods` setting in the
`LogSettings` section of `appsettings.json` from 5 minutes
to 60 minutes. This change extends the allowable age for
existing pods before they are considered outdated or require
action.

Author: Timothy Dodd

src/LogMkApi/appsettings.json

@@ -19,7 +19,7 @@
     },
     "LogSettings": {
         "MaxDaysOld": 30,
-        "MaxMinutesOldForExistingPods": 5,
+        "MaxMinutesOldForExistingPods": 60,
         "BackfillGracePeriodMinutes": 15,
         "EnableDuplicateDetection": true
     }