chore: Add changelog entry

Author: PhilippGackstatter

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - [BREAKING] Incremented minimum supported Rust version to 1.84.
 - [BREAKING] Moved `generated` module from `miden-proving-service-client` crate to `tx_prover::generated` hierarchy (#1102).
+- Implement transaction batch prover in Rust (#1112).
 
 ## 0.7.1 (2025-01-24) - `miden-objects` crate only