Remove support for Rails 6.0 and Ruby 2.7 #55

	name: CI
	on: [push, pull_request]
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	ruby: ['3.0', '3.1', '3.2']
	gemfile: [Gemfile.rails-6.1.x, Gemfile.rails-7.0.x]
	db: [mysql, postgres, sqlite]
	env:
	BUNDLE_GEMFILE: ${{ github.workspace }}/spec/support/gemfiles/${{ matrix.gemfile }}
	DB: ${{ matrix.db }}
	services:
	mysql:
	image: mysql:5.7
	env:
	MYSQL_DATABASE: double_entry_test
	MYSQL_USER: mysql
	MYSQL_PASSWORD: password
	MYSQL_ROOT_PASSWORD: root
	ports:
	- 3306:3306
	options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3
	postgres:
	image: postgres
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: password
	POSTGRES_DB: double_entry_test
	# Set health checks to wait until postgres has started
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 5432:5432
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true
	- run: cp spec/support/database.ci.yml spec/support/database.yml
	- run: bundle exec rspec
	- run: ruby script/jack_hammer -t 2000

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