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/cs_CZ/Webhook.json

@@ -1 +1,21 @@
-{}
+{
+  "labels": {
+    "Create Webhook": "Vytvořit Webhook"
+  },
+  "fields": {
+    "event": "Událost",
+    "isActive": "Je aktivní",
+    "user": "API Uživatel",
+    "entityType": "Typ entity",
+    "field": "Pole",
+    "secretKey": "Soukromý klíč",
+    "skipOwn": "Přeskočit vlastní"
+  },
+  "links": {
+    "user": "Uživatel",
+    "queueItems": "Položky fronty"
+  },
+  "tooltips": {
+    "skipOwn": "Webhook nebude zavolán pro akce provedené samotným uživatelem webhooku."
+  }
+}