chore: add changelog entry under UNRELEASED tests

Signed-off-by: Shravya Jallepally <jallepally0.0shravya@gmail.com>

Author: shrav-jally

CHANGELOG.md

@@ -7,10 +7,8 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [Unreleased]
 
 ### Tests
-- Formatted contract unit tests with black for consistent style. (#1523)
 - Format account test files with Black (#1519)
 - Improve unit test coverage for `Hbar`, including edge cases, validation, comparisons, and hashing. (#1483)
-- Standardize formatting of `evm_address_test.py` using Black for improved consistency and readability (#1529)
 - Formatted unit test files using Black.
 - Format `tests/unit/network_tls_test.py` with black for code style consistency (#1543)
 - Formatted client_test.py using black.