Fix error devnest command py313

[ccamposr]

raise TypeError('parents must be a list of ArgumentParser')

ccamposr@fedora:~/devnest$ devnest --help
Traceback (most recent call last):
File "/home/ccamposr/.local/bin/devnest", line 8, in
sys.exit(main())
~~~~^^
File "/home/ccamposr/.local/lib/python3.13/site-packages/devnest/lib/cli.py", line 709, in main
JenkinsNodeShell().main(args)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/home/ccamposr/.local/lib/python3.13/site-packages/devnest/lib/cli.py", line 389, in main
parser_args = self.parse_args(argv)
File "/home/ccamposr/.local/lib/python3.13/site-packages/devnest/lib/cli.py", line 362, in parse_args
parser = self.get_base_parser()
File "/home/ccamposr/.local/lib/python3.13/site-packages/devnest/lib/cli.py", line 139, in get_base_parser
parser = argparse.ArgumentParser(prog='devnest',
parents=[config_group],
...<2 lines>...
formatter_class=formatter,
add_help=False)
File "/usr/lib64/python3.13/argparse.py", line 1806, in init
raise TypeError('parents must be a list of ArgumentParser')
TypeError: parents must be a list of ArgumentParser

[gthiemonge]

This fix works for me