Update changelog for 2.6.4 release

Author: driskell

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## Future
 
+Logstash Input Plugin
+
+- Updated dependencies to newer versions
+
+## 2.6.4
+
+14th October 2021
+
 Log Courier / Log Carver
 
 - Simplified networking logic and fixed some deadlocks in publisher and scheduler
@@ -15,10 +23,6 @@ Log Carver
 - Added additional timeouts to ensure that all dead connections to log-carver are detected and closed
 - Fixed shutdown hanging forever if an ES transport is unable to retrieve node information
 
-Logstash Input Plugin
-
-- Updated dependencies to newer versions
-
 ## 2.6.3
 
 20th September 2021