Handle CalledProcessError when calling uname

[dieresys]

Usually, when distro is used in Windows, it returns nothing. Any call to lsb_release, uname, etc, raises a [[WinError 2] The system cannot find the file specified error, which is properly handled. However, in a particular environment where I've run it, I've found that the call to uname raises a CalledProcessError, because a Policy or a Security Control is injecting a non-zero return code:

t=2024-10-04T15:13:39+0200  Command '('uname', '-rs')' returned non-zero exit status 3221225794.
Traceback (most recent call last):
  File "C:\...\main.py", line 123, in __check_supported_platform
    distro_id = distro.id()
                ^^^^^^^^^^^
  File "C:\...\site-packages\distro\distro.py", line 284, in id
    return _distro.id()
           ^^^^^^^^^^^^
  File "C:\...\site-packages\distro\distro.py", line 855, in id
    distro_id = self.uname_attr("id")
                ^^^^^^^^^^^^^^^^^^^^^
  File "C:\...\site-packages\distro\distro.py", line 1088, in uname_attr
    return self._uname_info.get(attribute, "")
           ^^^^^^^^^^^^^^^^
  File "C:\...\lib\functools.py", line 995, in __get__
    val = self.func(instance)
          ^^^^^^^^^^^^^^^^^^^
  File "C:\...\site-packages\distro\distro.py", line 1202, in _uname_info
    stdout = subprocess.check_output(cmd, stderr=subprocess.DEVNULL)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\...\lib\subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\...\lib\subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('uname', '-rs')' returned non-zero exit status 3221225794.

We do handle CalledProcessError in other calls, so I'm adding it to uname too.