chore(config): update ALLOWED_HOSTS with new sslip.io domain

- Replace old sslip.io subdomain with new one (r0g84wkoc4cwoo0gckss88ow)
- Remove redundant IP address entries (72.61.138.80, 127.0.0.1)
- Keep localhost for local development

This updates the Django allowed hosts configuration to use the new
SSL.io subdomain while simplifying the host list by removing
redundant entries already covered by localhost.

booking_system/settings.py

@@ -12,10 +12,8 @@ SECRET_KEY = os.getenv('JWT_SECRET', 'django-insecure-fallback-secret-key')
 DEBUG = os.getenv('DEBUG', 'False').lower() == 'true'
 
 ALLOWED_HOSTS = [
-    'bocwoswwgks0gc8c84sgwkso.72.61.138.80.sslip.io',
-    '72.61.138.80',
+    'http://r0g84wkoc4cwoo0gckss88ow.72.61.138.80.sslip.io',
     'localhost',
-    '127.0.0.1',
 ]