modify changelog [skip ci] (#2652)

* fix hang issue
Signed-off-by: Ngroot <yihua.mo@zilliz.com>

* Update CMAKE
Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

* changelog
Signed-off-by: Nyhmo <yihua.mo@zilliz.com>
Co-authored-by: NJinHai-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