Update local dev env Erlang/Elixir versions #67

	name: Elixir 1.12.3/OTP 24.3.4

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:

	name: Build and test
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Set up Elixir
	uses: erlef/setup-beam@v1
	with:
	elixir-version: '1.12.3' # Define the elixir version [required]
	otp-version: '24.3.4' # Define the OTP version [required]
	- name: Restore dependencies cache
	uses: actions/cache@v2
	with:
	path: deps
	key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
	restore-keys: ${{ runner.os }}-mix-
	- name: Install dependencies
	run: mix deps.get
	- name: Run tests
	run: mix test
	- name: Run credo
	run: mix credo --strict

Provide feedback