MAP-1361 Update default alert channel

The default alert channel in the CircleCI configuration has been updated. It has been changed from 'locations-inside-prison-dev' to 'move-a-prisoner-alerts' in order to accommodate the new structure of alert handling.

.circleci/config.yml

@@ -9,7 +9,7 @@ parameters:
     type: string
     # Normally team specific alert channel e.g. hmpps_tech_alerts, syscon-alerts, dps_sed_alerts
     # This is to avoid a general alert dumping ground that no-one then monitors
-    default: locations-inside-prison-dev
+    default: move-a-prisoner-alerts
 
   releases-slack-channel:
     type: string