Feat: Add python3.13 support

[wirthual]

Add support for python 3.13

All tests passed except windows-latest and python3.13, created an issue #159 for that and disabled test execution on this setup for now.

[Copilot]

Pull Request Overview

This PR adds support for Python 3.13 to the project by updating dependency configurations and CI workflows. The implementation includes version-specific dependency constraints and excludes problematic test combinations.

• Adds Python 3.13 to the test matrix in GitHub Actions workflow
• Updates dependency version constraints for Python 3.13 compatibility
• Excludes windows-latest + Python 3.13 test combination due to known issues

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 2 comments.

File	Description
pyproject.toml	Updates dependency version constraints with Python 3.13-specific requirements for lxml and onnxruntime
.github/workflows/runtests.yml	Adds Python 3.13 to test matrix and excludes problematic windows-latest combination

Comments suppressed due to low confidence (1)

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[Copilot]

[nitpick] The array formatting is inconsistent with spacing. Consider formatting as [{version = "^4.9.3", markers = "python_version < '3.13'"}, {version = ">4.9.4", markers = "python_version >= '3.13'"}] for better readability.

Suggested change

	{ version = ">4.9.4", markers = "python_version >= '3.13'"}]
	lxml = [
	{version = "^4.9.3", markers = "python_version < '3.13'"},
	{version = ">4.9.4", markers = "python_version >= '3.13'"}
	]

[Copilot]

[nitpick] Inconsistent spacing around the equals sign in markers= "python_version >='3.10'". Should be markers = "python_version >= '3.10'" to match the formatting style used elsewhere.

Suggested change

	onnxruntime = [{version=">1.10.0,!=1.16.0", markers= "python_version >='3.10'"},
	onnxruntime = [{version=">1.10.0,!=1.16.0", markers = "python_version >= '3.10'"},