Changed on python 3.13

[shsailaubay]

Summary

ClientInfo class call getpass.getuser function on init dundermethod and catch KeyError exception. This is work for python <=3.12, but on python 3.13 version exception type raising from getpass.getuser function has been changed to OSError.

When using asynch with python >= 3.12 version we have uncaught exception.

Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/getpass.py", line 173, in getuser
    return pwd.getpwuid(os.getuid())[0]
           ~~~~~~~~~~~~^^^^^^^^^^^^^
KeyError: 'getpwuid(): uid not found: 10000'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/app/lib/python3.13/site-packages/asynch/cursors.py", line 75, in execute
    response = await execute(query, args=args, with_column_types=True, **execute_kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/connection.py", line 638, in execute
    async with ExecuteContext(self, query, settings):
               ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/context.py", line 60, in __aexit__
    raise exc_val
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/connection.py", line 653, in execute
    rv = await self.process_ordinary_query(
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
    )
    ^
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/connection.py", line 778, in process_ordinary_query
    await self.send_query(query, query_id=query_id)
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/connection.py", line 520, in send_query
    client_info = ClientInfo(self.client_name, self.writer, self.context)
  File "/opt/app/lib/python3.13/site-packages/asynch/proto/cs.py", line 68, in __init__
    self.os_user = getpass.getuser()
                   ~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/getpass.py", line 175, in getuser
    raise OSError('No username set in the environment') from e
OSError: No username set in the environment 

[shsailaubay]

this is merge request that fixing #156