Moved changelog entry.

Signed-off-by: Peter Štibraný <[email protected]>

Author: pstibrany

CHANGELOG.md

@@ -15,6 +15,7 @@
   * `cortex_alertmanager_state_initial_sync_duration_seconds`
   * `cortex_alertmanager_state_persist_total`
   * `cortex_alertmanager_state_persist_failed_total`
+* [FEATURE] Alertmanager: Added rate-limits to email notifier. Rate limits can be configured using `-alertmanager.email-notification-rate-limit` and `-alertmanager.email-notification-burst-size`. These limits are applied on individual alertmanagers. Rate-limited email notifications are failed notifications. It is possible to monitor rate-limited notifications via new `cortex_alertmanager_notification_rate_limited_total` metric. #4135
 * [BUGFIX] Purger: fix `Invalid null value in condition for column range` caused by `nil` value in range for WriteBatch query. #4128
 
 ## 1.9.0 in progress
@@ -49,7 +50,6 @@
     * `-memberlist.tls-insecure-skip-verify`
 * [CHANGE] Cortex now fast fails on startup if unable to connect to the ring backend. #4068
 * [FEATURE] Ruler: added `local` backend support to the ruler storage configuration under the `-ruler-storage.` flag prefix. #3932
-* [FEATURE] Alertmanager: Added rate-limits to email notifier. Rate limits can be configured using `-alertmanager.email-notification-rate-limit` and `-alertmanager.email-notification-burst-size`. These limits are applied on individual alertmanagers. Rate-limited email notifications are failed notifications. It is possible to monitor rate-limited notifications via new `cortex_alertmanager_notification_rate_limited_total` metric. #4135
 * [ENHANCEMENT] Upgraded Docker base images to `alpine:3.13`. #4042
 * [ENHANCEMENT] Blocks storage: reduce ingester memory by eliminating series reference cache. #3951
 * [ENHANCEMENT] Ruler: optimized `<prefix>/api/v1/rules` and `<prefix>/api/v1/alerts` when ruler sharding is enabled. #3916