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/i18n/bg_BG/EmailAddress.json

@@ -6,7 +6,8 @@
   },
   "fields": {
     "optOut": "Отписал се",
-    "invalid": "невалиден"
+    "invalid": "невалиден",
+    "lower": "Име с малки букви"
   },
   "presetFilters": {
     "orphan": "сирак"