Bump actions/setup-go from 2 to 5 #15

	name: Go

	on:
	workflow_dispatch:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: 1.15

	# Not needed
	# - name: Fetch
	# run: go get -t -v ./...

	- name: Format
	run: diff -u <(echo -n) <(gofmt -d -s .)

	- name: Build
	run: go build outbound-link-checker.go

	# We don't have tests yet
	# go test -v ./...
	- name: Vet
	run: go vet .

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