Bump actions/checkout from 3 to 4 #38

	name: CI
	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	build:
	name: Build and Test
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [ '1.18', '1.19' ]
	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}

	- name: Check out code
	uses: actions/checkout@v4

	- name: Build code
	run: \|
	go build ./cmd/...

	- name: Check API with invalid API key (and invalid PDF)
	env:
	PDFTABLES_API_KEY: ${{ secrets.PDFTABLES_API_KEY }}
	run: \|
	./pdftables-api 2>&1 README.md \| grep "unauthorized"

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