chore: Update CHANGELOG.md (#13417)

CHANGELOG.md

@@ -110,8 +110,28 @@ Starting with the 3.0 release we began using [conventional commits](https://www.
 * **loki** Background Cache: Fixes a bug that is causing the background queue size to be incremented twice for each enqueued item. [11776](https://github.com/grafana/loki/pull/11776)
 * **loki**: Parsing: String array elements were not being parsed correctly in JSON processing [11921](https://github.com/grafana/loki/pull/11921)
 
-## [2.9.7](https://github.com/grafana/loki/compare/v2.9.6...v2.9.7) (2024-04-10)
+## [2.9.9](https://github.com/grafana/loki/compare/v2.9.8...v2.9.9) (2024-07-04)
+
+### All Changes
+
+#### Loki
+
+##### Fixes
+
+* [12925](https://github.com/grafana/loki/pull/12925) **grobinson-grafana** Ingester: Add ingester_chunks_flush_failures_total
+* [13140](https://github.com/grafana/loki/pull/13140) **grobinson-grafana** Ingester: Add backoff to flush op
+
+## [2.9.8](https://github.com/grafana/loki/compare/v2.9.7...v2.9.8) (2024-05-03)
 
+### All Changes
+
+#### Loki
+
+##### Fixes
+
+* update module golang.org/x/net to v0.23.0 [security] (release-2.9.x) ([#12865](https://github.com/grafana/loki/issues/12865)) ([94e0029](https://github.com/grafana/loki/commit/94e00299ec9b36ad97c147641566b6922268c54e))
+
+## [2.9.7](https://github.com/grafana/loki/compare/v2.9.6...v2.9.7) (2024-04-10)
 
 ### Bug Fixes