Bump actions/cache from 3 to 4 (#24) #58

	name: Elixir CI

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	build:
	name: Build and test
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	elixir: ["1.14.5", "1.15.0", "1.16.0"]
	otp: ["24.3.4", "25.3.2", "26.2.1"]
	include:
	- elixir: "1.14.5"
	otp: "23.3.4"
	steps:
	- uses: actions/checkout@v4
	- name: Set up Elixir
	uses: erlef/setup-beam@v1
	with:
	otp-version: ${{matrix.otp}}
	elixir-version: ${{matrix.elixir}}
	- name: Restore dependencies cache
	uses: actions/cache@v4
	with:
	path: deps
	key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
	restore-keys: ${{ runner.os }}-mix-
	- name: Install dependencies
	run: mix deps.get --check-locked
	- name: Compile
	run: mix compile --warnings-as-errors
	- name: Credo check
	run: mix credo --strict
	- name: Format check
	run: mix format
	- name: Mix Audit check
	run: mix deps.audit
	- name: Run tests
	run: mix test

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