Updated CHANGELOG.md

Author: 0xMimir

CHANGELOG.md

@@ -95,7 +95,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   reusing build caches for efficiency
   ([#1539](https://github.com/o1-labs/mina-rust/pull/1539))
 - **Ledger**: document, clean and add tests for the crate `mina-tree`
-  ([#1531](https://github.com/o1-labs/mina-rust/pull/1531).
+  ([#1531](https://github.com/o1-labs/mina-rust/pull/1531)).
+- **GRAPHQL**: fixed parsing when neither signature nor proof is given Issue [#1464](https://github.com/o1-labs/mina-rust/issues/1464)
+  ([#1546](https://github.com/o1-labs/mina-rust/pull/1546)) 
 
 ## v0.17.0