Add lastRunId field to RunnerEvents constructor

Introduced a new field, lastRunId, to the RunnerEvents constructor to track the ID of the last run. This change enhances the event model, enabling better traceability and context for runner events.

Author: jreynard-code

src/main/kotlin/com/cosmotech/api/events/RunnerEvents.kt

@@ -27,5 +27,6 @@ class UpdateRunnerStatus(
     publisher: Any,
     val organizationId: String,
     val workspaceId: String,
-    val runnerId: String
+    val runnerId: String,
+    val lastRunId: String,
 ) : CsmRequestResponseEvent<String>(publisher)