Remove icon reference and maxBoxVersion limit

CloudronManifest.json

@@ -17,12 +17,10 @@
   "website": "https://anonaddy.com",
   "contactEmail": "support@anonaddy.com",
   "minBoxVersion": "7.0.0",
-  "maxBoxVersion": "8.0.0",
   "mediaLinks": [
     "https://anonaddy.com/assets/img/logo.svg"
   ],
   "postInstallMessage": "AnonAddy is now installed!\n\nIMPORTANT SETUP STEPS:\n\n1. Login with the default admin credentials:\n   Email: admin@example.com\n   Password: password\n\n2. IMMEDIATELY change the admin password in Settings\n\n3. Configure your domain in Settings -> Domains\n\n4. Set up DNS records:\n   - MX record pointing to your Cloudron server\n   - SPF record for email authentication\n   - DKIM keys (generated in Settings)\n\n5. Configure SMTP settings to receive emails\n\nFor more information, visit: https://anonaddy.com/help",
-  "icon": "file://logo.png",
   "memoryLimit": 512000000,
   "optionalSso": true
 }