update dependency golang.org/x/net and readme #260

	name: CI

	on:
	push:
	branches:
	- v2
	paths-ignore:
	- '**.md'
	pull_request:
	branches:
	- main
	- v2
	paths-ignore:
	- '**.md'

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	jobs:
	build:
	name: Build
	strategy:
	matrix:
	go: [ '1.21.x']
	os: [ ubuntu-latest ]

	runs-on: ${{ matrix.os }}

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go }}
	cache: true
	cache-dependency-path: go.sum

	- name: Format
	run: diff -u <(echo -n) <(go fmt $(go list ./...))

	- name: Test
	run: go test ./... -race -coverprofile=coverage.txt -covermode=atomic

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v4
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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