Fix b4 release date: 2026, not 2025

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: tpellissier

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.1.0b4] - 2025-02-25
+## [0.1.0b4] - 2026-02-25
 
 ### Added
 - Operation namespaces: `client.records`, `client.query`, `client.tables`, `client.files` (#102)