Update Go (and golangci-lint, and gqlgen) versions, and test codegen #888

	name: Go

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

	jobs:
	build:
	name: Test
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: [ '1.22', '1.23' ]

	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}
	id: go

	- name: Git checkout
	uses: actions/checkout@v2

	- name: Run tests
	env:
	# Needed for the example-test to run.
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	go test -cover -v ./...

	lint:
	name: Lint
	runs-on: ubuntu-latest

	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.23'
	id: go

	- name: Git checkout
	uses: actions/checkout@v2

	- name: Run lint
	uses: golangci/golangci-lint-action@v3
	with:
	version: v1.62.2 # should match internal/lint/go.mod

	generate:
	name: Check generated code
	runs-on: ubuntu-latest

	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.23'
	id: go

	- name: Git checkout
	uses: actions/checkout@v2

	- name: Check up to date
	run: \|
	go generate -v -x ./...
	echo "if this fails, please check in the results of `go generate ./...`"
	git diff --exit-code

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