Bump munch from 2.5.0 to 4.0.0 #157

	name: Check deps

	on:
	pull_request:
	paths:
	- setup.py
	- requirements.txt
	- dev-requirements.in
	- dev-requirements.txt
	- .github/workflows/dependencies.yml

	env:
	DEBIAN_FRONTEND: noninteractive

	jobs:
	quality:
	name: Checking dependency graph
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: ['ubuntu-20.04']
	python-version: ['3.8']

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- uses: actions/cache@v3
	with:
	path: \|
	~/.cache/pip
	~/.wheel_dir

	key: pip-${{ matrix.python-version }}
	restore-keys: \|
	pip-${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	pip3 wheel --wheel-dir=~/.wheel_dir pip wheel setuptools
	pip3 install --find-links=~/.wheel_dir --upgrade pip wheel setuptools
	pip3 wheel --wheel-dir=~/.wheel_dir pip-tools -c dev-requirements.txt
	pip3 install --find-links=~/.wheel_dir --upgrade pip-tools -c dev-requirements.txt

	- name: Check dependency graph
	run: \|
	pip-compile -q
	pip-compile -q dev-requirements.in

	- name: Verify dependency graph is ok
	uses: tj-actions/verify-changed-files@v16
	id: verify-changed-files
	with:
	files: \|
	requirements.txt
	dev-requirements.txt

	- name: Validating graph
	if: steps.verify-changed-files.outputs.files_changed == 'true'
	run: \|
	echo "Dependency file(s) changed: ${{ steps.verify-changed-files.outputs.changed_files }}"
	git diff
	core.setFailed('Please add your new dependencies in setup.py and/or dev-requirements.in then run pip-compile to add them in requirements. (see docs/contribute/development)')

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