Bump minimum Go version to 1.21 #24

	name: Linux Integration Test

	on:
	pull_request: {}
	push:
	branches:
	- master

	jobs:
	build:
	strategy:
	matrix:
	go-version: ["1.21", "1.22"]
	runs-on: ubuntu-latest

	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}
	id: go

	- name: Check out Go module
	uses: actions/checkout@v4

	- name: Run integration tests
	run: make integration

	- name: goveralls
	uses: shogo82148/actions-goveralls@v1
	with:
	path-to-profile: cover-int.out

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