pilkit autopkg tests fail with pillow 10.0.0

Imported from Debian bug http://bugs.debian.org/1040633:

Package: src:pilkit
Version: 2.0-4
Severity: serious
Tags: sid trixie

see
https://ci.debian.net/data/autopkgtest/testing/amd64/p/pilkit/35498777/log.gz

  41s ======================================================================
  41s ERROR: Test that the upscale argument works as expected.
  41s ----------------------------------------------------------------------
  41s Traceback (most recent call last):
  41s File "/usr/lib/python3/dist-packages/nose/case.py", line 197, in runTest
  41s self.test(*self.arg)
  41s File
"/tmp/autopkgtest-lxc.6edwevyp/downtmp/autopkgtest_tmp/tests/test_processors.py",
line 97, in test_upscale
  41s img2 = P(500, 500, upscale=True).process(img)
  41s ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  41s File "/usr/lib/python3/dist-packages/pilkit/processors/resize.py", line
24, in process
  41s img = img.resize((self.width, self.height), Image.ANTIALIAS)
  41s ^^^^^^^^^^^^^^^
  41s AttributeError: module 'PIL.Image' has no attribute 'ANTIALIAS'
  41s
  41s ----------------------------------------------------------------------
  41s Ran 26 tests in 0.048s
  41s
  41s FAILED (errors=6)