add changelog

Author: szybia

docs/changelog/130847.yaml

@@ -0,0 +1,12 @@
+pr: 130847
+summary: "Pipelines: Add `created_date` and `modified_date`"
+area: Ingest Node
+type: enhancement
+issues: [108754]
+highlight:
+ title: "Pipelines: Add `created_date` and `modified_date`"
+ body: |-
+ Pipelines now have extra properties to indicate when they were created, and updated, to improve visibility
+ and debugging.
+ These properties are managed by the system and cannot be updated by the user.
+ notable: true