Use 3.9 in airflow tests #3655

	name: Lint
	on:
	pull_request:
	types: [opened, synchronize]
	push:
	branches:
	- main
	jobs:
	lint_check:
	name: Python ${{ matrix.python_version }} lint test
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python_version: ["3.9"]
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3
	with:
	ref: ${{ github.event.pull_request.head.ref }}
	repository: ${{ github.event.pull_request.head.repo.full_name }}
	- name: Set up python ${{ matrix.python_version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python_version }}
	cache: 'pip'
	cache-dependency-path: 'pyproject.toml'
	- uses: actions/cache@v3
	id: cache
	with:
	path: ${{ env.pythonLocation }}
	key: ${{ matrix.python_version }}-lint-${{ env.pythonLocation }}-${{ hashFiles('**/pyproject.toml') }}-v01
	- name: Install evalml with dev requirements (not using cache)
	if: steps.cache.outputs.cache-hit != 'true'
	run: \|
	python -m pip install -e .[dev]
	- name: Install evalml with no requirements (using cache)
	if: steps.cache.outputs.cache-hit == 'true'
	run: \|
	python -m pip install -e .[dev] --no-deps
	- name: Run lint test
	run: make lint

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