fix linting

Author: nikhilc-microsoft

libraries/microsoft-agents-a365-observability-core/microsoft_agents_a365/observability/core/utils.py

@@ -178,19 +178,19 @@ def wrapper(*args, **kwargs):
 
 def validate_and_normalize_ip(ip_string: str | None) -> str | None:
     """Validate and normalize an IP address string.
-    
+
     Args:
         ip_string: The IP address string to validate (IPv4 or IPv6)
-        
+
     Returns:
         The normalized IP address string if valid, None if invalid or None input
-        
+
     Logs:
         Error message if the IP address is invalid
     """
     if ip_string is None:
         return None
-        
+
     try:
         # Validate and normalize IP address
         ip_obj = ip_address(ip_string)