chore: add CHANGELOG entry for v4.2.1 and fix test formatting

Author: Mat001

CHANGELOG.md

@@ -4,6 +4,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [4.2.1] - January 3, 2025
+
+### Fixed
+
+* Fixed decision notifications not working with secure environment SDK keys
+* Added documentation for Redis channel naming pattern in config.yaml
+
 ## [4.2.0] - July 17, 2025
 
 ### New Features

pkg/handlers/notification_test.go

@@ -587,7 +587,7 @@ func (suite *NotificationTestSuite) TestSecureTokenParsing() {
 
 func (suite *NotificationTestSuite) TestSecureTokenParsingIntegration() {
 	// Test that secure token parsing works end-to-end with actual notification flow
-	
+
 	// Test with secure token format
 	req := httptest.NewRequest("GET", "/notifications/event-stream", nil)
 	req.Header.Set(middleware.OptlySDKHeader, "test_sdk_key:test_api_key")
@@ -597,19 +597,19 @@ func (suite *NotificationTestSuite) TestSecureTokenParsingIntegration() {
 	mockReceiver := func(ctx context.Context) (<-chan syncer.Event, error) {
 		sdkKey := ctx.Value(SDKKey).(string)
 		suite.Equal("test_sdk_key", sdkKey, "SDK key should be extracted from secure token format")
-		
+
 		dataChan := make(chan syncer.Event, 1)
 		// Send a test event
 		dataChan <- syncer.Event{
-			Type: notification.Decision,
+			Type:    notification.Decision,
 			Message: map[string]string{"test": "event"},
 		}
 		close(dataChan)
 		return dataChan, nil
 	}
 
 	suite.mux.Get("/test-secure-notifications", NotificationEventStreamHandler(mockReceiver))
-	
+
 	// Create cancelable context for SSE
 	ctx, cancel := context.WithTimeout(req.Context(), 1*time.Second)
 	defer cancel()