use 20 in action #128

	name: Python tests

	on:
	- push
	- pull_request

	jobs:
	build:
	runs-on: ubuntu-latest
	services:
	postgres:
	image: postgres:16-alpine
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: police_data_test
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 5432:5432
	steps:
	- uses: actions/checkout@v4
	- name: Python 3.12 Setup
	uses: actions/setup-python@v5
	with:
	python-version: 3.12
	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install python3-dev libpq-dev
	python -m pip install --upgrade pip
	python -m pip install -r requirements/dev_unix.txt
	- name: Check style
	run: flake8 backend/
	- name: Run tests
	run: python -m pytest
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: police_data
	MIXPANEL_TOKEN: mixpanel_token

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