Fix argument parsing in newer Python.

The comment in the code has more details, but as of
python/cpython#114180 we need to
check for both a 3-tuple and a 4-tuple.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>

colcon_core/command.py

@@ -226,7 +226,14 @@ class CustomArgumentParser(argparse.ArgumentParser):
 
  def _parse_optional(self, arg_string):
  result = super()._parse_optional(arg_string)
- if result == (None, arg_string, None):
+ # Up until https://github.com/python/cpython/pull/114180 ,
+ # _parse_optional() returned a 3-tuple when it couldn't classify
+ # the option. As of that PR (which is in Python 3.13, and
+ # backported to Python 3.12), it returns a 4-tuple. Check for
+ # either here.
+ if result in (
+ (None, arg_string, None), (None, arg_string, None, None)
+ ):
  # in the case there the arg is classified as an unknown 'O'
  # override that and classify it as an 'A'
  return None