style: format code with Black and PHP CS Fixer

This commit fixes the style issues introduced in 60fe8eb according to the output
from Black and PHP CS Fixer.

Details: None

pulse_xmpp_agent/agentxmpp.py

@@ -184,6 +184,7 @@ def create_config_file(file_path, config_data):
     with open(file_path, "w") as configfile:
         config.write(configfile)
 
+
 class TimedCompressedRotatingFileHandler(TimedRotatingFileHandler):
     """
     Extended version of TimedRotatingFileHandler that compress logs on rollover.