update default timezone on doc

Author: bennsimon

README.md

@@ -94,7 +94,7 @@ spec:
 
 | Configuration             | Description                                                                                              | Default       |
 |---------------------------|----------------------------------------------------------------------------------------------------------|---------------|
-| `TZ`                      | Specifies the timezone used.                                                                             | `local`       |
+| `TZ`                      | Specifies the timezone used.                                                                             | `UTC`         |
 | `NAMESPACES_OFF_LIMITS`   | Specifies lists of namespaces (comma separated) that should be ignored by the operator.                  | `kube-system` |
 | `RECONCILIATION_DURATION` | Specifies the duration in seconds at which cluster workloads are reconciled with the workload schedules. | `60`          |
 | `DEBUG`                   | Shows the additional info logs for debugging purposes.                                                   | `false`       |