Remove upper version requirement on Python

[wojnilowicz]

aw-qt fails to build on Fedora 41, because it requires Python < 3.13 and Fedora uses Python 3.13. It works fine with the latest version of Python though.

This patch is intended to help with Fedora packaging by assuming that aw-qt works on the latest Python instead of requiring the packager to test it manually with every major release of Python.

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:rocket:	This description was created by Ellipsis for commit 37540bc1cdf2ae344dc5ba526fba1dc3b9b4e757

Summary:

Removed the upper version limit on Python in pyproject.toml to support Python 3.13 and future versions.

Key points:

• Modified pyproject.toml to remove the upper version limit on Python.
• Changed python dependency from ^3.8,<3.13 to ^3.8.
• Ensures compatibility with Python 3.13 and future versions.
• Helps with Fedora packaging by avoiding manual testing for each Python release.

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Generated with :heart: by ellipsis.dev