modify changelog [skip ci] (#2652)

* fix hang issue

Signed-off-by: groot <yihua.mo@zilliz.com>

* Update CMAKE

Signed-off-by: JinHai-CN <hai.jin@zilliz.com>

* changelog

Signed-off-by: yhmo <yihua.mo@zilliz.com>

Co-authored-by: JinHai-CN <hai.jin@zilliz.com>

CHANGELOG.md

@@ -6,8 +6,11 @@ Please mark all change in change log and use the issue from GitHub
 
 ## Bug
 
--   \#2450 The deleted vectors may be found on GPU
+-   \#1997 Index file missed after compact
+-   \#2264 Milvus opened too many files when the metric_config.enable_monitor=true
+-   \#2266 Server hangs when using multi-clients to query different collections
 -   \#2399 The nlist set by the user may not take effect
+-   \#2450 The deleted vectors may be found on GPU
 
 ## Feature