upgrade kubebuilder to plugin/v4 #630

	name: manifests-up-to-date

	on:
	push:
	branches:
	- main
	pull_request:
	types: [opened, synchronize]
	paths-ignore:
	- 'docs/**'

	jobs:
	manifests-up-to-date:
	name: Manifests up-to-date check
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go 1.21
	uses: actions/[email protected]
	with:
	go-version: "1.21"
	id: go
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	- name: Restore cache
	uses: actions/[email protected]
	with:
	path: \|
	~/.cache/go-build
	~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-
	- name: Get dependencies
	run: \|
	go mod download
	- name: Generate
	run: make manifests
	- name: Check diff
	run: git diff --exit-code -- config

Provide feedback