[PR #7749/0dc39e46 backport][3.8] Enable testing merge queues @ GitHub Actions CI/CD #2564

	name: Dependabot post-update
	on:
	pull_request_target:
	action: [opened, synchronize, reopened]
	branches:
	- 'master'
	- '[0-9].[0-9]+'

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
	cancel-in-progress: true

	jobs:
	post-update:
	if: ${{ github.actor == 'dependabot[bot]' }}
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2.4.0
	- name: Generate Token
	id: generate_token
	uses: tibdex/github-app-token@v1
	with:
	app_id: ${{ secrets.BOT_APP_ID }}
	private_key: ${{ secrets.BOT_PRIVATE_KEY }}
	- name: Login
	run: \|
	echo "${{ steps.generate_token.outputs.token }}" \| gh auth login --with-token
	- name: Checkout
	run: \|
	gh pr checkout ${{ github.event.pull_request.number }}
	- name: Setup Python
	uses: actions/setup-python@v2
	- name: Cache PyPI
	uses: actions/cache@v2.1.7
	with:
	key: post-update-${{ hashFiles('requirements/*.txt') }}
	path: ~/.cache/pip
	restore-keys: \|
	post-update-
	- name: Update pip, wheel, setuptools
	run: \|
	python -m pip install -U pip wheel setuptools
	- name: Install dependencies
	run: \|
	python -m pip install -r requirements/dev.txt -c requirements/constraints.txt
	- name: Run pip-compile
	run: \|
	make compile-deps
	- name: Check if compiled deps are changed
	id: meta
	run: \|
	if [[ -n "$(git status --porcelain)" ]]; then
	echo "::set-output name=changed::true"
	else
	echo "::set-output name=changed::false"
	- name: Commit and push if needed
	if: ${{ steps.meta.values.changed == 'true' }}
	run: \|
	git add requirements/constraints.txt
	git commit -m "Update constraints"
	git push

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