Upgrade all dev dependencies to fix dependabot alerts #217

	name: Build and tests
	on:
	push:
	branches: [ main ]
	pull_request:
	jobs:
	build:
	strategy:
	matrix:
	config:
	# [Python version, tox env]
	- ["3.11", "py311"]
	- ["3.10", "py310"]
	- ["3.9", "py39"]
	runs-on: ubuntu-latest
	name: ${{ matrix.config[1] }}
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Setup
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.config[0] }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install tox
	- name: Test runner
	run: tox -e ${{ matrix.config[1] }}

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