TST: extend GHA test matrix to current Python versions #42

	name: Linter
	on:
	push:
	branches: '*'
	pull_request:
	branches: '*'
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- name: Checkout
	uses: actions/checkout@v1
	- name: Install Python 3.8
	uses: actions/setup-python@v1
	with:
	python-version: 3.8
	architecture: 'x64'
	- name: Install the Python dependencies
	run: \|
	pip install flake8
	pip install -e .
	- name: Run Linter
	run: \|
	python -m flake8 jupyter_telemetry

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