github/workflows: add go v1.22 build, bump setup-go and cache #13

	name: Go

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:

	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [ '1.20', '1.21', '1.22']
	steps:
	- name: Cache go deps
	uses: actions/cache@v4
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashfiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-
	- uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go }}
	env:
	GOFLAGS: -mod=mod

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

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

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