feat: improvements to ruff and new python 3.15

[vinitkumar]

This PR adds support for Python 3.15 alpha testing and modernizes the ruff linting setup by switching from a pip-installed version to using uvx for direct execution.

Added Python 3.15.0-alpha.1 to the CI test matrix
Removed separate ruff installation step in favor of using uvx to run ruff directly

Summary by Sourcery

Add support for Python 3.15 alpha in CI and modernize Ruff linting by running it through uvx instead of a separate installation

CI:

• Add Python 3.15.0-alpha.1 to the GitHub Actions test matrix
• Remove separate pip installation of Ruff and run Ruff via uvx directly

[Copilot]

Pull Request Overview

This PR adds support for Python 3.15 alpha testing and modernizes the ruff linting setup by switching from a pip-installed version to using uvx for direct execution.

• Added Python 3.15.0-alpha.1 to the CI test matrix
• Removed separate ruff installation step in favor of using uvx to run ruff directly

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.30%. Comparing base (91ef7e3) to head (593cd40).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #255   +/-   ##
=======================================
  Coverage   99.30%   99.30%           
=======================================
  Files           3        3           
  Lines         288      288           
=======================================
  Hits          286      286           
  Misses          2        2           

Flag	Coverage Δ
unittests	99.30% <ø> (ø)

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR extends the GitHub Actions CI to test against Python 3.15 alpha and streamlines the ruff linting workflow by removing its separate installation and leveraging uvx for direct execution.

Flow diagram for updated ruff linting step in CI

flowchart TD
  A["Install dependencies with uv"] --> B["Run ruff using uvx"]

Loading

File-Level Changes

Change	Details	Files
Add Python 3.15 alpha to the CI test matrix	Expanded the python-version matrix to include '3.15.0-alpha.1'	.github/workflows/pythonpackage.yml
Modernize ruff linting with uvx	Removed the standalone ruff installation step Replaced direct 'ruff' command with 'uvx ruff' for linting	.github/workflows/pythonpackage.yml

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• Add an explicit step to install or pin uvx before calling 'uvx ruff' so the CI won’t fail if uvx isn’t already available.
• Combine the two 'uv pip install' commands into one to reduce redundant installs and speed up the workflow.
• Consider marking the Python 3.15 alpha job as allowed-to-fail in the matrix since alpha releases can break unpredictably.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Add an explicit step to install or pin uvx before calling 'uvx ruff' so the CI won’t fail if uvx isn’t already available.
- Combine the two 'uv pip install' commands into one to reduce redundant installs and speed up the workflow.
- Consider marking the Python 3.15 alpha job as allowed-to-fail in the matrix since alpha releases can break unpredictably.

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