Bump version to 0.26.4 adding release notes

Author: knocte

CHANGELOG.md

@@ -5,6 +5,13 @@ 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).
 
+## [0.26.4] - 2025-11-05
+
+- Fix docs generation #766 #768 [@webwarrior-ws, @knocte]
+- Fix TODO adding 2 missing unit tests #774 [@Thorium]
+- Fix false positive in hints (FL0065) #492 #773 [@Thorium]
+- Update Microsoft.Build dependencies to fix CI #769 [@Numpsy]
+
 ## [0.26.2] - 2025-08-16
 
 - Potentially fix flaky FailwithBadUsage rule's tests #763 #764 [@knocte]