Bump senderz.app.mail template version to 2

Required by Domain Connect Templates CI when modifying an existing template.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: appdever01

senderz.app.mail.json

@@ -3,7 +3,7 @@
   "providerName": "Senderz",
   "serviceId": "mail",
   "serviceName": "Mail",
-  "version": 1,
+  "version": 2,
   "syncPubKeyDomain": "senderz.app",
   "syncRedirectDomain": "senderz.app",
   "syncBlock": false,