Upgrade github actions. #57

	name: Go

	on:
	push:
	tags:
	- v*
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [ "1.19.x", "1.20.x", "1.21.x" ]
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}

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

	- name: Test
	run: go test -timeout=120s -v -race -short

	- name: Run go vet
	run: go vet ./

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