chore: update date in changelog

Author: porcellus

CHANGELOG.md

@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
-## [0.50] - 2025-08-11
+## [0.50] - 2025-08-15
 
 -   Add WebAuthn credential management methods: `listCredentials`, `removeCredential`
 -   Added `createAndRegisterCredentialWithUser` method that creates and registers a credential with a user