CHANGELOG.md: Update the changelog

CHANGELOG.md

@@ -5,12 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
--   **Added** for new features.
--   **Changed** for changes in existing functionality.
--   **Deprecated** for soon-to-be removed features.
--   **Removed** for now removed features.
--   **Fixed** for any bug fixes.
--   **Security** in case of vulnerabilities.
+## [Unreleased] - 2024-08-13
+
+-   Added nameserver check for linux hosts (@0x636f646f)
 
 ## [Unreleased]