chore: update to go1.21.9 #161

	name: Go

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: "1.21.8"

	- name: Build
	run: go build -v ./...

	- name: Test
	run: go test -cover -race ./...

	- name: Install dependencies
	run: sudo apt-get install libpcap-dev

	- name: Test Examples
	run: cd example && go test -cover -race ./...

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