changelog: add notes about closing #12256

[skip ci]

CHANGELOG.md

@@ -24,6 +24,7 @@
 * **Snapshots**: Fix: annotations not properly extracted leading to incorrect rendering of annotations [#12278](https://github.com/grafana/grafana/issues/12278)
 * **LDAP**: Allow use of DN in group_search_filter_user_attribute and member_of [#3132](https://github.com/grafana/grafana/issues/3132), thx [@mmolnar](https://github.com/mmolnar)
 * **Graph**: Fix legend decimals precision calculation [#11792](https://github.com/grafana/grafana/issues/11792)
+* **Dashboard**: Make sure to process panels in collapsed rows when exporting dashboard [#12256](https://github.com/grafana/grafana/issues/12256)
 
 ### 5.2.0-beta1 fixes