Update actions/checkout action to v4 #116

	name: test
	on:
	pull_request_target:

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [1.17]
	name: Test with Go version ${{ matrix.go }}
	steps:
	- uses: actions/setup-go@v3.5.0
	with:
	go-version: ${{ matrix.go }}

	- name: Check out code into the Go module directory
	uses: actions/checkout@v4.1.6
	with:
	ref: ${{ github.event.pull_request.head.sha }}

	- name: tools
	run: make tools

	- name: lint
	run: make lint

	- name: test
	run: make test

	- name: build
	run: make build

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