release notes for 2.6.122

Author: mgravell

docs/ReleaseNotes.md

@@ -8,6 +8,10 @@ Current package versions:
 
 ## Unreleased
 
+(none)
+
+## 2.6.122
+
 - Change: Target net6.0 instead of net5.0, since net5.0 is end of life. ([#2497 by eerhardt](https://github.com/StackExchange/StackExchange.Redis/pull/2497))
 - Fix: Fix nullability annotation of IConnectionMultiplexer.RegisterProfiler ([#2494 by eerhardt](https://github.com/StackExchange/StackExchange.Redis/pull/2494))
 - Add: `Timer.ActiveCount` under `POOL` in timeout messages on .NET 6+ to help diagnose timer overload affecting timeout evaluations ([#2500 by NickCraver](https://github.com/StackExchange/StackExchange.Redis/pull/2500))