add changelog for 2.8.1, retract precious versions till mainnet ones. (#708)

Author: puneet2019

CHANGELOG.md

@@ -36,6 +36,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## Unreleased
 
+## [v2.8.1] - 2023-12-21
+
 ### Bug Fixes
 
 - [707](https://github.com/persistenceOne/pstake-native/pull/707) Fix liquidstakeibc redeem edge case for protecting cValue  

go.mod

@@ -2,6 +2,16 @@ module github.com/persistenceOne/pstake-native/v2
 
 go 1.21
 
+retract (
+	v2.8.0
+	[v2.7.1, v2.7.2]
+	v2.6.0
+	v2.5.0
+	v2.4.0
+	[v2.3.0, v2.3.3]
+	[v2.2.0, v2.2.3]
+)
+
 require (
 	cosmossdk.io/api v0.3.1
 	cosmossdk.io/errors v1.0.0