Update actions/setup-go action to v5 #124

	name: Check code coverage
	on: [ push, pull_request ]

	jobs:
	codecov:
	name: codecov
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-go@v5
	with:
	go-version: '1.20'
	cache: false

	- name: Get dependencies
	run: \|
	go get -v -t -d ./...

	- name: Generate coverage report
	run: \|
	go test `go list ./... \| grep -v examples` -coverprofile=coverage.txt -covermode=atomic

	- name: Upload coverage report
	uses: codecov/codecov-action@v4.5.0
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: ./coverage.txt
	flags: unittests

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