Backdating and adding corresponding changelog entry.

Author: Oxyjun

src/content/changelogs/durable-objects.yaml

@@ -47,3 +47,8 @@ entries:
       Durable Objects [request billing](/durable-objects/platform/pricing/#billing-metrics) applies a 20:1 ratio for incoming WebSocket messages. For example, 1 million Websocket received messages across connections would be charged as 50,000 Durable Objects requests.
 
       This is a billing-only calculation and does not impact Durable Objects [metrics and analytics](/durable-objects/observability/graphql-analytics/).
+
+  - publish_date: "2024-02-15"
+    title: Optional `alarmInfo` parameter for Durable Object Alarms
+    description: |-
+      Durable Objects [Alarms](/durable-objects/api/alarms/) now have a new `alarmInfo` argument that provides more details about an alarm invocation, including the `retryCount` and `isRetry` to signal if the alarm was retried.