Prepare CHANGELOG for next release cycle

Adds a new section for the changes to be included in the next release.

Signed-off-by: Winford <winford@object.stream>

Author: UncleGrumpy

CHANGELOG.md

@@ -11,7 +11,9 @@ 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).
 
-## [0.7.4] (2024.06.06)
+## [0.7.5] (unreleased)
+
+## [0.7.4] (2025.05.26)
 
 ### Added
 - Added support for the `--application` (or `-a`) option to support AtomVM OTP applications.