Add a changelog

Signed-off-by: SungJin1212 <[email protected]>

Author: SungJin1212

CHANGELOG.md

@@ -25,6 +25,7 @@
 * [FEATURE] Query Frontend: Add support /api/v1/format_query API for formatting queries. #6893
 * [FEATURE] Query Frontend: Add support for /api/v1/parse_query API (experimental) to parse a PromQL expression and return it as a JSON-formatted AST (abstract syntax tree). #6978
 * [ENHANCEMENT] Modernizes the entire codebase by using go modernize tool. #7005
+* [ENHANCEMENT] OTLP: Add a dedicated Cortex converter to skip the intermediate conversion from Prometheus format to Cortex for performance. #7014 
 * [ENHANCEMENT] Overrides Exporter: Expose all fields that can be converted to float64. Also, the label value `max_local_series_per_metric` got renamed to `max_series_per_metric`, and `max_local_series_per_user` got renamed to `max_series_per_user`. #6979
 * [ENHANCEMENT] Ingester: Add `cortex_ingester_tsdb_wal_replay_unknown_refs_total` and `cortex_ingester_tsdb_wbl_replay_unknown_refs_total` metrics to track unknown series references during wal/wbl replaying. #6945
 * [ENHANCEMENT] Ruler: Emit an error message when the rule synchronization fails. #6902