Fix: update GitHub Actions workflow to set specific git user name #541

	name: Backend Tests

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	test:
	runs-on: ${{ matrix.OS }}
	strategy:
	matrix:
	backend: [directx, metal, opengl, 'slang', 'vulkan', 'mojo']
	python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
	OS: [ubuntu-latest, windows-latest, macOS-latest]
	fail-fast: false

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .
	pip install -r requirements.txt

	- name: Run backend tests
	run: pytest tests/test_backend/test_${{ matrix.backend }}

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