[21.09] pin celery to 5.2.3 #32155

	name: macOS startup
	on:
	push:
	paths-ignore:
	- 'doc/**'
	- 'lib/galaxy_test/selenium/**'
	pull_request:
	paths-ignore:
	- 'doc/**'
	- 'lib/galaxy_test/selenium/**'
	concurrency:
	group: osx-first-startup-${{ github.ref }}
	cancel-in-progress: true
	jobs:
	test:
	name: Startup test
	runs-on: macos-latest
	defaults:
	run:
	shell: bash -l {0}
	steps:
	- uses: actions/checkout@v2
	with:
	path: 'galaxy root'
	- name: Cache pip dir
	uses: actions/cache@v1
	id: pip-cache
	with:
	path: ~/Library/Caches/pip
	# scripts/common_startup.sh creates a conda env for Galaxy containing Python 3.6
	key: pip-cache-3.6-${{ hashFiles('galaxy root/requirements.txt') }}
	- name: Install and activate miniconda # use this job to test using Python from a conda environment
	uses: conda-incubator/setup-miniconda@v2
	with:
	activate-environment: ''
	- name: Install tox
	run: pip install tox
	- name: run tests
	run: tox -e first_startup
	working-directory: 'galaxy root'

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