fix(backend): drastically increase batching time for the agent run (#9654)

<!-- Clearly explain the need for these changes: -->

We accidently send several emails within 10 mins and we're gonna get
blocked for spam if we keep it up

### Changes 🏗️
- moves 1 min to 60 min timer
<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [x] Test via batching a series of notiications over an hour

autogpt_platform/backend/backend/data/notifications.py

@@ -381,7 +381,7 @@ class UserNotificationBatchDTO(BaseModel):
 
 def get_batch_delay(notification_type: NotificationType) -> timedelta:
     return {
-        NotificationType.AGENT_RUN: timedelta(minutes=1),
+        NotificationType.AGENT_RUN: timedelta(minutes=60),
         NotificationType.ZERO_BALANCE: timedelta(minutes=60),
         NotificationType.LOW_BALANCE: timedelta(minutes=60),
         NotificationType.BLOCK_EXECUTION_FAILED: timedelta(minutes=60),