Add changelog entry

Author: chipshort

CHANGELOG.md

@@ -81,6 +81,8 @@ and this project adheres to
 - cosmwasm-vm: Update wasmer to 5.0.6. ([#2472])
 - cosmwasm-std: Add a new `exports` feature which needs to be enabled for the
   primary cosmwasm_std dependency of a contract.
+- cosmwasm-vm: Enable partial reference-type support, enabling contracts
+  compiled with Rust 1.82 or newer to be stored. ([#2473])
 
 ## Fixed
 
@@ -122,6 +124,7 @@ and this project adheres to
 [#2458]: https://github.com/CosmWasm/cosmwasm/pull/2458
 [#2467]: https://github.com/CosmWasm/cosmwasm/pull/2467
 [#2472]: https://github.com/CosmWasm/cosmwasm/pull/2472
+[#2473]: https://github.com/CosmWasm/cosmwasm/pull/2473
 
 ## [2.2.0] - 2024-12-17