[21.09] pin celery to 5.2.3 #27857

	name: Selenium tests
	on:
	push:
	paths-ignore:
	- 'doc/**'
	pull_request:
	paths-ignore:
	- 'doc/**'
	env:
	GALAXY_TEST_DBURI: 'postgresql://postgres:postgres@localhost:5432/galaxy?client_encoding=utf8'
	GALAXY_TEST_RAISE_EXCEPTION_ON_HISTORYLESS_HDA: '1'
	GALAXY_TEST_SELENIUM_RETRIES: 1
	GALAXY_TEST_SKIP_FLAKEY_TESTS_ON_ERROR: 'true'
	YARN_INSTALL_OPTS: --frozen-lockfile
	concurrency:
	group: selenium-${{ github.ref }}
	cancel-in-progress: true
	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ['3.7']
	chunk: [0, 1, 2]
	services:
	postgres:
	image: postgres:13
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: postgres
	ports:
	- 5432:5432
	steps:
	- uses: actions/checkout@v2
	with:
	path: 'galaxy root'
	- uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Cache pip dir
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: pip-cache-${{ matrix.python-version }}-${{ hashFiles('galaxy root/requirements.txt') }}
	- uses: mvdbeek/gha-yarn-cache@master
	with:
	yarn-lock-file: 'galaxy root/client/yarn.lock'
	- uses: nanasess/setup-chromedriver@master
	- name: Run tests
	run: ./run_tests.sh -selenium lib/galaxy_test/selenium -- --num-shards=3 --shard-id=${{ matrix.chunk }}
	working-directory: 'galaxy root'
	- uses: actions/upload-artifact@v2
	if: failure()
	with:
	name: Selenium test results (${{ matrix.python-version }}, ${{ matrix.chunk }})
	path: 'galaxy root/database/test_errors'

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