Update changelog

CHANGELOG.md

@@ -5,6 +5,16 @@ 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).
 
+## Unreleased
+
+### Changed
+
+- Renamed the example environment variable file from `.env` to `.env.example`
+
+### Todo
+
+- Ensure that you still have a `.env` file in your project
+
 ## 1.237.0 - 2023-02-19
 
 ### Added