[DDW-1203] Add a changelog entry

Author: michalrus

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### Chores
 
+- Defined a proxy for currency conversions ([PR 3121](https://github.com/input-output-hk/daedalus/pull/3121))
 - Switched Daedalus to be built with Nix flakes ([PR 3008](https://github.com/input-output-hk/daedalus/pull/3008))
 - Update `cardano-wallet` to `v2023-04-14` ([PR 3104](https://github.com/input-output-hk/daedalus/pull/3104))
 - Prepared an official `aarch64-darwin` build ([PR 3116](https://github.com/input-output-hk/daedalus/pull/3116))