Update CHANGELOG.md

Co-authored-by: Daijiro Fukuda <fukuda@clear-code.com>

Author: Watson1978

CHANGELOG.md

@@ -10,6 +10,7 @@
 ### Misc
 
 * Add missing gem dependency on Ruby 3.4.
+  https://github.com/fluent/fluentd/pull/5177
 
 * CI improvemnts
   https://github.com/fluent/fluentd/pull/5135