Update rack requirement from >= 1.6, < 3.0 to >= 1.6, < 4.0 #22

	name: CI

	on: [push, pull_request, workflow_dispatch]

	jobs:
	test:
	name: Ruby ${{ matrix.ruby }} / ${{ matrix.os }}

	strategy:
	fail-fast: false
	matrix:
	ruby:
	- head
	- "3.3"
	- "3.2"
	- "3.1"
	os:
	- ubuntu-latest
	- macos-latest
	- windows-latest

	runs-on: ${{ matrix.os }}

	env:
	BUNDLE_WITHOUT: linter

	steps:
	- name: Dump environment
	run: env \| sort
	- name: Check out repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 1
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true
	- name: Dump Ruby version
	run: ruby -v
	- name: Run tests
	run: bundle exec rake test

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