update changelog

Author: randy-cro

CHANGELOG.md

@@ -38,7 +38,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ## Unreleased
 
 * (geth) [#665](https://github.com/crypto-org-chain/ethermint/pull/665) Update go-ethereum version to [`v1.15.11`](https://github.com/ethereum/go-ethereum/releases/tag/v1.15.11).
-* (evm) [#689](https://github.com/crypto-org-chain/ethermint/pull/689) Enable CancunTime and PragueTime in chain config migration.
+* (evm) [#689](https://github.com/crypto-org-chain/ethermint/pull/689)  Enable CancunTime and PragueTime in chain config migration.
+* (evm) [#689](https://github.com/crypto-org-chain/ethermint/pull/691) Remove active precompiles from VMContext 
 
 ### Features