python3-pytest: update to 9.0.3

python3-pytest: update to 9.0.3

Update package to 9.0.3.

Security fix:
- CVE-2025-71176: Fixed use of an insecure temporary directory

Bug fixes:
- pytest.approx now correctly accounts for collections.abc.Mapping key
  order when comparing mappings
- Blocking a conftest.py with -p no: is now explicitly disallowed with a
  clear UsageError (previously caused an internal assertion failure)
- Fixed crash when a test raises an ExceptionGroup with
  __tracebackhide__ = True
- Fixed non-string messages in unittest.TestCase.subTest() not printed

Signed-off-by: Alexandru Ardelean <redacted>