python3Packages.pilkit: fix compat with pillow 10.0

pkgs/development/python-modules/pilkit/default.nix

···
   postPatch = ''
     substituteInPlace tox.ini \
       --replace " --cov --cov-report term-missing:skip-covered" ""
+    substituteInPlace pilkit/processors/resize.py \
+      --replace "Image.ANTIALIAS" "Image.Resampling.LANCZOS"
   '';
 
   pythonImportsCheck = [