pin jupyter_client<8 and pyzmq<25 (#6749) #491

	# The NBConvert Service requires pandoc. Instead of testing
	# Pandoc on every operating system (which should already be
	# done in nbconvert directly), we'll only test these services
	# on ubuntu where we can easily load Pandoc from a Github
	# Actions docker image (this docker image is not on other
	# operating systems).
	name: NBConvert Service Tests
	on:
	push:
	branches: '*'
	pull_request:
	branches: '*'
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: [ '3.7', '3.8', '3.9', '3.10' ]
	steps:
	- name: Checkout
	uses: actions/checkout@v1
	- name: Install Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	architecture: 'x64'
	- name: Setup Pandoc
	uses: r-lib/actions/setup-pandoc@v1
	- name: Upgrade packaging dependencies
	run: \|
	pip install --upgrade pip setuptools wheel
	- name: Get pip cache dir
	id: pip-cache
	run: \|
	echo "::set-output name=dir::$(pip cache dir)"
	- name: Cache pip
	uses: actions/cache@v1
	with:
	path: ${{ steps.pip-cache.outputs.dir }}
	key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-${{ matrix.python-version }}-
	${{ runner.os }}-pip-
	- name: Install the Python dependencies
	run: \|
	pip install -e .[test]
	- name: Run NBConvert Tests
	run: \|
	pytest notebook/nbconvert/tests/
	- name: Run NBConvert Service Tests
	run: \|
	pytest notebook/services/nbconvert/tests/

Provide feedback