Fix gh-actions checkout action version deprecation #679

	name: Build and test discogs_client

	on:
	push:
	pull_request:
	types: [opened, review_requested, synchronize, reopened, edited, ready_for_review]

	jobs:
	build:

	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install .
	pip install nose coverage
	- name: Run Tests with coverage
	run: \|
	python -m unittest

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