CI: use Ruby 2.7 in publish.yml #188

	name: CI

	on:
	pull_request:

	push:
	branches:
	- main

	env:
	GIT_COMMIT_SHA: ${{ github.sha }}
	GIT_BRANCH: ${{ github.ref }}

	jobs:
	linting:
	runs-on: ubuntu-latest
	env:
	BUNDLE_WITHOUT: 'development test'
	BUNDLE_WITH: 'lint'
	steps:
	- uses: actions/checkout@v4
	- name: Set up Ruby 2.6
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 2.6
	bundler-cache: true # 'bundle install' and cache gems

	- name: Rubocop
	run: bundle exec rubocop --format progress

	# Deal with "yard-junk now requires Ruby version >= 2.7.0. The current ruby version is 2.6.10.210."
	- name: Yard-Junk
	run: \|
	gem install ostruct
	gem install yard-junk -v 0.0.9 --no-document
	RUBYOPT='-r ostruct' yard-junk --path lib

	build:
	needs: [linting]
	runs-on: ubuntu-latest
	strategy:
	matrix:
	ruby: ['2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3']

	steps:
	- name: Install system dependencies
	run: sudo apt-get update && sudo apt install libcurl4-openssl-dev
	- uses: actions/checkout@v4
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true # 'bundle install' and then cache gems
	- name: Test
	run: bundle exec rake

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