Add a GitHub Actions workflow to run the test suite #5

	---
	name: tests
	on: [ push, pull_request ]
	jobs:
	test:
	name: Test (Ruby ${{ matrix.ruby }})
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	ruby: [ '3.2', '3.1', '3.0' ]
	steps:
	- uses: actions/checkout@v4
	- name: Set up Ruby ${{ matrix.ruby }}
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true
	- name: RSpec
	run: bundle exec rspec
	env:
	DATABASE_URL: postgres://postgres:secretdb@localhost:25432/event_sourcery_todo_app_test
	services:
	postgres:
	image: postgres
	env:
	POSTGRES_DB: event_sourcery_todo_app_test
	POSTGRES_PASSWORD: secretdb
	ports:
	- 25432:5432

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