ci: extract upstream pipeline, start integration testing against nokogiri main #3

	name: "upstream"
Check failure on line 1 in .github/workflows/upstream.yml View workflow run for this annotation GitHub Actions / upstream Invalid workflow file `The workflow is not valid. .github/workflows/upstream.yml: (Line: 42, Col: 36, Idx: 916) - (Line: 42, Col: 41, Idx: 921): While scanning a plain scalar, find unexpected ':'.`

	concurrency:
	group: "${{github.workflow}}-${{github.ref}}"
	cancel-in-progress: true

	on:
	workflow_dispatch:
	schedule:
	- cron: "0 8 * * 5" # At 08:00 on Friday # https://crontab.guru/#0_8___5
	push:
	branches:
	- main
	pull_request:
	types: [opened, synchronize]
	branches:
	- main
	paths:
	- .github/workflows/upstream.yml # this file

	jobs:
	test:
	strategy:
	fail-fast: false
	matrix:
	ruby-version: ["head", "jruby-head", "truffleruby-head"]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{matrix.ruby-version}}
	bundler-cache: true
	- run: bundle exec rake test

	upstream:
	name: "upstream (${{matrix.name}})"
	strategy:
	fail-fast: false
	matrix:
	include:
	- { name: nokogiri, url: https://github.com/sparklemotion/nokogiri }
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: ruby/setup-ruby@v1
	- run: \|
	bundle remove ${{matrix.name}} \|\| true
	bundle add ${{matrix.name}} --path="#{{matrix.url}}"
	bundle install
	- run: bundle exec rake test

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