bump ubuntu release on github actions to 20.04 #6

	name: Publish Python 🐍 distributions 📦 to PyPI

	on:
	push:
	tags:
	- '*'

	jobs:
	build-n-publish:
	name: Build and publish Python 🐍 distributions 📦 to PyPI
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@master
	- name: Set up Python 3.10
	uses: actions/setup-python@v3
	with:
	python-version: '3.10'
	- name: Install pypa/setuptools
	run: >-
	python -m
	pip install wheel
	- name: Extract tag name
	id: tag
	run: echo ::set-output name=TAG_NAME::$(echo $GITHUB_REF \| cut -d / -f 3)
	- name: Update version in setup.py
	run: >-
	sed -i "s/{{VERSION_PLACEHOLDER}}/${{ steps.tag.outputs.TAG_NAME }}/g" setup.py
	- name: Update version in __init__.py
	run: >-
	sed -i "s/{{VERSION_PLACEHOLDER}}/${{ steps.tag.outputs.TAG_NAME }}/g" pycarol/__init__.py
	- name: Build a binary wheel
	run: >-
	python setup.py sdist bdist_wheel
	- name: Publish distribution 📦 to PyPI
	uses: pypa/gh-action-pypi-publish@master
	with:
	password: ${{ secrets.PYPI_API_TOKEN }}

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