Add changelog entry

Author: chipshort

CHANGELOG.md

@@ -26,11 +26,14 @@ and this project adheres to
 - cosmwasm-vm: Export a new `migrate_with_info` function ([#2212])
 - cosmwasm-derive: Add support for migrate method with
   `migrate_info: MigrateInfo` argument. ([#2212])
+- cosmwasm-vm: Enable support for reference-types proposal, required since Rust
+  1.82 ([#2288])
 
 [#2118]: https://github.com/CosmWasm/cosmwasm/pull/2118
 [#2196]: https://github.com/CosmWasm/cosmwasm/pull/2196
 [#2220]: https://github.com/CosmWasm/cosmwasm/pull/2220
 [#2212]: https://github.com/CosmWasm/cosmwasm/pull/2212
+[#2288]: https://github.com/CosmWasm/cosmwasm/pull/2288
 
 ### Changed