subscription-manager register command fails with the following error "System certificates are corrupted. Please reregister."

Issue

• When attempting to register the system using subscription-manager, the following error is encountered:

  # subscription-manager register
    System certificates corrupted. Please reregister.
  

• The following traceback appears in the /var/log/rhsm/rhsm.log file during registration attempts:

  2025-04-29 02:45:43,369 [ERROR] dnf:2381780:MainThread @certificate2.py:143 - module 'dateutil.tz' has    no 
  attribute 'UTC'
  Traceback (most recent call last):
    File "/usr/lib64/python3.6/site-packages/rhsm/certificate2.py", line 136, in _read_x509
      return self._create_v1_cert(version, extensions, x509, path)
    File "/usr/lib64/python3.6/site-packages/rhsm/certificate2.py", line 155, in _create_v1_cert
      return self._create_v1_prod_cert(version, extensions, x509, path)
    File "/usr/lib64/python3.6/site-packages/rhsm/certificate2.py", line 194, in _create_v1_prod_cert
      start=get_datetime_from_x509(x509.get_not_before()),
    File "/usr/lib64/python3.6/site-packages/rhsm/certificate.py", line 90, in get_datetime_from_x509
      return dateutil.parser.parse(date)
    File "/usr/lib/python3.6/site-packages/dateutil/parser/_parser.py", line 1368, in parse
      return DEFAULTPARSER.parse(timestr, **kwargs)
    File "/usr/lib/python3.6/site-packages/dateutil/parser/_parser.py", line 654, in parse
      ret = self._build_tzaware(ret, res, tzinfos)
    File "/usr/lib/python3.6/site-packages/dateutil/parser/_parser.py", line 1195, in _build_tzaware
      aware = naive.replace(tzinfo=tz.UTC)
  AttributeError: module 'dateutil.tz' has no attribute 'UTC'