chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Resources/defaults/config.php

@@ -3,7 +3,7 @@
  * This file is part of EspoCRM.
  *
  * EspoCRM – Open Source CRM application.
- * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
  * Website: https://www.espocrm.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -54,7 +54,7 @@ return [
     'recordsPerPageSelect' => 10,
     'recordsPerPageKanban' => 5,
     'applicationName' => 'EspoCRM',
-    'version' => '9.2.0',
+    'version' => '9.3.0',
     'timeZone' => 'UTC',
     'dateFormat' => 'DD.MM.YYYY',
     'timeFormat' => 'HH:mm',