Matrix test go versions, require go1.23+ #49

	name: ci-pipeline

	on:
	push:
	branches: [ "*" ]
	pull_request:
	branches: [ "*" ]

	jobs:

	ci:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [ '', '1.x' ] # '' uses go.mod, 1.x uses latest go
	steps:
	- uses: actions/checkout@v2
	with:
	path: src/sigs.k8s.io/json/

	- name: Set up Go
	uses: actions/setup-go@v3
	with:
	go-version-file: './src/sigs.k8s.io/json/go.mod'
	go-version: ${{ matrix.go }}
	check-latest: true

	- name: Test
	run: \|
	cd ${GITHUB_WORKSPACE}/src/sigs.k8s.io/json/
	make test
	- name: Benchmark
	run: \|
	cd ${GITHUB_WORKSPACE}/src/sigs.k8s.io/json/
	make benchmark
	- name: Vet
	run: \|
	cd ${GITHUB_WORKSPACE}/src/sigs.k8s.io/json/
	make vet
	- name: fmt
	run: \|
	cd ${GITHUB_WORKSPACE}/src/sigs.k8s.io/json/
	make fmt
	git diff --exit-code

	apidiff:
	runs-on: ubuntu-latest
	if: github.base_ref
	steps:
	- name: Install Go
	uses: actions/setup-go@v3
	with:
	go-version: '1.x'
	- name: Add GOBIN to PATH
	run: echo "$(go env GOPATH)/bin" >> $GITHUB_PATH
	- name: Install dependencies
	run: go install golang.org/x/exp/cmd/apidiff@latest
	- name: Checkout old code
	uses: actions/checkout@v2
	with:
	ref: ${{ github.base_ref }}
	path: "old"
	- name: Checkout new code
	uses: actions/checkout@v2
	with:
	path: "new"
	- name: APIDiff
	run: ./hack/verify-apidiff.sh -d ../old
	working-directory: "new"

Provide feedback