internal/stack: Use control flow for state #12

	name: CI

	on:
	push:
	branches: [master]
	tags: ['v*']
	pull_request:
	branches: ['*']

	permissions:
	contents: read

	jobs:

	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: ["1.20.x", "1.21.x"]

	steps:
	- name: Checkout code
	uses: actions/checkout@v3
	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}

	- name: Test
	run: make cover

	- name: Upload coverage to codecov.io
	uses: codecov/codecov-action@v3

	lint:
	name: Lint
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	name: Check out repository
	- uses: actions/setup-go@v4
	name: Set up Go
	with:
	go-version: 1.21.x
	cache: false # managed by golangci-lint

	- uses: golangci/golangci-lint-action@v3
	name: Install golangci-lint
	with:
	version: latest
	args: --version # make lint will run the linter

	- run: make lint
	name: Lint

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