SRU: Fix URLValidator crash in some edge cases

python-django FTBFS with Python 3.11.4 with the following test failures:

======================================================================
ERROR: test_validators (validators.tests.TestValidators.test_validators) [URLValidator] (value='http://[::1:2::3]:8080/')
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.11/unittest/case.py", line 57, in testPartExecutor
    yield
  File "/usr/lib/python3.11/unittest/case.py", line 538, in subTest
    yield
  File "/<<PKGBUILDDIR>>/tests/validators/tests.py", line 354, in test_validators
    validator(value)
  File "/<<PKGBUILDDIR>>/django/core/validators.py", line 132, in __call__
    host_match = re.search(r'^\[(.+)\](?::\d{2,5})?$', urlsplit(value).netloc)
    ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/urllib/parse.py", line 500, in urlsplit
    _check_bracketed_host(bracketed_host)
    ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/urllib/parse.py", line 446, in _check_bracketed_host
    ip = ipaddress.ip_address(hostname) # Throws Value Error if not IPv6 or IPv4
    ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/ipaddress.py", line 54, in ip_address
    raise ValueError(f'{address!r} does not appear to be an IPv4 or IPv6 address')
      ^^^^^^^^^^^^^^^^^
ValueError: '::1:2::3' does not appear to be an IPv4 or IPv6 address

======================================================================
ERROR: test_value_placeholder_with_char_field (forms_tests.tests.test_validators.ValidatorCustomMessageTests.test_value_placeholder_with_char_field) [URLValidator] (value='http://[::1:2::3]/')
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.11/unittest/case.py", line 57, in testPartExecutor
    yield
  File "/usr/lib/python3.11/unittest/case.py", line 538, in subTest
    yield
  File "/<<PKGBUILDDIR>>/tests/forms_tests/tests/test_validators.py", line 108, in test_value_placeholder_with_char_field
    self.assertIs(form.is_valid(), False)
    ^^^^^^^^^^^^^^^^^
  File "/<<PKGBUILDDIR>>/django/forms/forms.py", line 175, in is_valid
    return self.is_bound and not self.errors
    ^^^^^^^^^^^^^^^^^
  File "/<<PKGBUILDDIR>>/django/forms/forms.py", line 170, in errors
    self.full_clean()
  File "/<<PKGBUILDDIR>>/django/forms/forms.py", line 372, in full_clean
    self._clean_fields()
    ^^^^^^^^^^^^^^^^^
  File "/<<PKGBUILDDIR>>/django/forms/forms.py", line 390, in _clean_fields
    value = field.clean(value)
    ^^^^^^^^^^^^^^^^^
  File "/<<PKGBUILDDIR>>/django/forms/fields.py", line 151, in clean
    self.run_validators(value)
    ^^^^^^^^^^^^^^^^^
  File "/<<PKGBUILDDIR>>/django/forms/fields.py", line 136, in run_validators
    v(value)
  File "/<<PKGBUILDDIR>>/django/core/validators.py", line 132, in __call__
    host_match = re.search(r'^\[(.+)\](?::\d{2,5})?$', urlsplit(value).netloc)
    ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/urllib/parse.py", line 500, in urlsplit
    _check_bracketed_host(bracketed_host)
    ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/urllib/parse.py", line 446, in _check_bracketed_host
    ip = ipaddress.ip_ad...

This bug was fixed in the package python-django - 3:3.2.19-1ubuntu3

---------------
python-django (3:3.2.19-1ubuntu3) mantic; urgency=medium

  * Drop 2eb1f37260f0e0b71ef3a77eb5522d2bb68d6489.patch and
    16729.patch, it seems these are no longer needed
  * Cherry-pick upstream commit to fix URLValidator crash in
    some edge cases (LP: #2025155)

 -- Graham Inggs <email address hidden> Wed, 28 Jun 2023 11:20:10 +0000

This bug was fixed in the package python-django - 3:3.2.18-1ubuntu0.3

---------------
python-django (3:3.2.18-1ubuntu0.3) lunar-security; urgency=medium

  * SECURITY UPDATE: Potential ReDoS issues
    - debian/patches/CVE-2023-36053.patch: prevent potential ReDoS in
      EmailValidator and URLValidator in django/core/validators.py,
      django/forms/fields.py, docs/ref/forms/fields.txt,
      docs/ref/validators.txt,
      tests/forms_tests/field_tests/test_emailfield.py,
      tests/forms_tests/tests/test_forms.py, tests/validators/tests.py.
    - CVE-2023-36053
  * debian/patches/fix-url-validator.patch: Cherry-pick upstream commit to
    fix URLValidator crash in some edge cases (LP: #2025155)

 -- Marc Deslauriers <email address hidden> Tue, 27 Jun 2023 09:18:49 -0400