Fix publish workflow #2

	# copied from https://github.com/marketplace/actions/install-poetry-action
	name: publish (alternative)

	on: pull_request

	jobs:
	publish:
	runs-on: ubuntu-latest
	steps:
	#----------------------------------------------
	# check-out repo and set-up python
	#----------------------------------------------
	- name: Check out repository
	uses: actions/checkout@v3
	- name: Set up python
	id: setup-python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"
	#----------------------------------------------
	# ----- install & configure poetry -----
	#----------------------------------------------
	- name: Install Poetry
	uses: snok/install-poetry@v1
	with:
	virtualenvs-create: true
	virtualenvs-in-project: true
	installer-parallel: true
	- name: Install poetry dynamic versioning plugin
	run: poetry self add "poetry-dynamic-versioning[plugin]"
	- name: Build & publish ixmp4
	run: poetry publish --build --dry-run

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