Update actions/checkout digest to b4ffde6 #54

	name: Python code quality check

	on:
	- push
	- pull_request

	jobs:

	flake8-actinia:

	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.8
	- name: Install
	run: \|
	python -m pip install --upgrade pip
	pip install flake8==3.8.0
	- name: Run Flake8
	run: \|
	flake8 --config=.flake8 --count --statistics --show-source --jobs=$(nproc) .

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