Fix tests on Go 1.15 #32

	name: Style Checkers
	on:
	# run tests on push to master, but not when other branches are pushed to
	push:
	branches:
	- master

	# run tests for all pull requests
	pull_request:

	env:
	latest_go: "1.21.x"

	jobs:
	lint:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go ${{ env.latest_go }}
	uses: actions/setup-go@v4
	with:
	go-version: ${{ env.latest_go }}

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

	- name: golangci-lint
	uses: golangci/golangci-lint-action@v3
	with:
	# Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
	version: v1.55
	args: --verbose --timeout 5m

	- name: Check go.mod/go.sum
	run: \|
	echo "check if go.mod and go.sum are up to date"
	go mod tidy
	git diff --exit-code go.mod go.sum

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