Update Codecov action to v4. #20

	name: Build Test Coverage
	on: [push, pull_request]
	jobs:
	run:
	runs-on: ubuntu-latest
	env:
	DISPLAY: :0
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Setup Python 3.8.12
	uses: actions/setup-python@v4
	with:
	python-version: '3.8.12'
	- name: Update PIP
	run: python -m pip install --upgrade pip
	- name: Install OS Dependencies
	run: sudo apt-get install xvfb
	- name: Install Requirements
	run: pip install -r requirements.txt
	- name: Generate Report
	run: xvfb-run --auto-servernum coverage run --source=chip8 -m unittest
	- name: Codecov
	uses: codecov/codecov-action@v4

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