fix: allow pillow 11 and above

[gokhanmeteerturk]

This updates the version constraint for the pillow dependency in the pyproject.toml file, removing the upper version limit. This allows the project to use future versions of pillow beyond 11.0.

I tested the project (and ran tests) with latest pillow version. 12.0.1 (with python 3.10 3.11 3.12 3.13 and 3.14) and all tests passed.

Dependency update:

• Removed the upper version limit for the pillow dependency, changing the requirement from pillow>=9.3,<11.0 to pillow>=9.3 in pyproject.toml.

[qTipTip]

Hi, @gokhanmeteerturk! Thanks for looking into this! I'll take a look!

[qTipTip]

Looks good to me! Might need to do some more book-keeping on the python-version range before I can release this as a new version. Thanks for your contribution!