Release: update changelog for 11.5.1 (grafana#99956)

* Update changelog

* update changelog manually

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: joshhunt <josh@trtr.co>

CHANGELOG.md

@@ -1,3 +1,13 @@
+<!-- 11.5.1 START -->
+
+# 11.5.1 (2025-02-03)
+
+### Bug fixes
+
+- **CodeEditor:** Fix cursor alignment [#99090](https://github.com/grafana/grafana/pull/99090), [@ashharrison90](https://github.com/ashharrison90)
+- **TransformationFilter**: Include transformation outputs in transformation filtering options: Include transformation outputs in transformation filtering options [#98323](https://github.com/grafana/grafana/pull/98323), [@Sergej-Vlasov](https://github.com/Sergej-Vlasov)
+
+<!-- 11.5.1 END -->
 <!-- 11.5.0 START -->
 
 # 11.5.0 (2025-01-28)