Update Elixir requirement to ~> 1.16 #249

	name: CI

	on: [push, pull_request]

	jobs:
	format:
	name: Format and compile with warnings as errors
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Install OTP and Elixir
	uses: erlef/setup-beam@v1
	with:
	otp-version: 26.x
	elixir-version: 1.16.x

	- name: Install dependencies
	run: mix deps.get

	- name: Compile with --warnings-as-errors
	run: mix compile --warnings-as-errors

	- name: Run "mix format"
	run: mix format --check-formatted

	test:
	name: Test (Elixir ${{matrix.elixir}} \| Erlang/OTP ${{matrix.otp}})
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	include:
	- otp: 26.x
	elixir: 1.16.x
	coverage: true
	- otp: 27.x
	elixir: 1.17.x
	env:
	MIX_ENV: test
	steps:
	- uses: actions/checkout@v2

	- name: Install OTP and Elixir
	uses: erlef/setup-beam@v1
	with:
	otp-version: ${{matrix.otp}}
	elixir-version: ${{matrix.elixir}}

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.1.0
	bundler: 2.3.23

	- name: Install dependencies
	run: mix deps.get --only test

	- name: Install liquid gem
	run: gem install liquid -v 5.4.0

	- name: Run tests
	run: mix test --trace

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