Update changelog

Author: Mrtenz

packages/eth-block-tracker/CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- **BREAKING:** Update minimum Node.js version from `^18.16.0` to `^18.18.0` ([#7930](https://github.com/MetaMask/core/pull/7930))
 - This package was migrated from `MetaMask/eth-block-tracker` to the
   `MetaMask/core` monorepo ([#7930](https://github.com/MetaMask/core/pull/7930))
   - See [`MetaMask/eth-block-tracker`](https://github.com/MetaMask/eth-block-tracker/blob/main/CHANGELOG.md)