Fix compatibility with Python 2.7 #150

	name: plone.rest CI
	on: [push]
	jobs:
	build:
	runs-on: "ubuntu-20.04" # needed to keep Python 2.7
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.11", "3.10", "3.9", "3.8", "2.7"]
	plone-version: ["6.0", "5.2"]
	exclude:
	- python-version: 2.7
	plone-version: 6.0
	- python-version: 3.11
	plone-version: 5.2
	- python-version: 3.10
	plone-version: 5.2
	- python-version: 3.9
	plone-version: 5.2
	steps:
	# git checkout
	- uses: actions/checkout@v2

	# python setup
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}

	# python cache
	- uses: actions/cache@v1
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	# python install
	- run: pip install virtualenv
	- run: pip install wheel
	- name: pip install
	run: pip install -r requirements-${{ matrix.plone-version }}.x.txt
	- name: choose Plone version
	run: sed -ie "s#plone-x.x.x.cfg#plone-${{ matrix.plone-version }}.x.cfg#" ci.cfg

	# buildout
	- name: buildout
	run: buildout -t 10 -c ci.cfg
	env:
	CI: true

	# test
	- name: test
	run: bin/test

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