Update changelog

Author: taiki-e

CHANGELOG.md

@@ -12,7 +12,11 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
-- Fix infinite recursion when cyclical features interact with `--mutually-exclusive-features`. ([#276](https://github.com/taiki-e/cargo-hack/pull/276), thanks @xStrom)
+- Fix `--mutually-exclusive-features` interacting with optional dependencies. ([#276](https://github.com/taiki-e/cargo-hack/pull/276), thanks @xStrom)
+
+  This is a re-land of the change added in 0.6.34 but reverted in 0.6.36 due to infinite recursion bug, with the infinite recursion bug fixed.
+
+- Update `toml_edit` to 0.23.
 
 ## [0.6.36] - 2025-03-20