update copyright

Author: Half-Shot

charts/matrix-stack/configs/element-web/config.json.tpl

@@ -1,6 +1,6 @@
 {{- /*
 Copyright 2025 New Vector Ltd
-Copyright 2025 Element Creations Ltd
+Copyright 2025-2026 Element Creations Ltd
 
 SPDX-License-Identifier: AGPL-3.0-only
 */ -}}