Add exception formatter for log output

[shima004]

This pull request makes a targeted improvement to the logging configuration in logger.py. The main change is to enhance the formatting of exceptions in log output.

Logging configuration enhancement:

• Updated the ConsoleRenderer used in the structlog.stdlib.ProcessorFormatter to include an exception_formatter, specifically structlog.dev.plain_traceback, which will produce clearer and more readable exception tracebacks in the logs.