chore(golangci-lint): bump from v1.51.0 to v1.56.0

[wdhif]

What does this PR do?

Bump golangci-lint version from v1.51.0 to v1.56.0

Motivation

The current version of golangci-lint has memory issues with some Go versions.

Describe your test plan

➜  datadog-operator git:(wassim.dhif/bump-golangci-lint) ✗ make lint
hack/golangci-lint.sh -b "bin/darwin-arm64" v1.56.0
golangci/golangci-lint info checking GitHub for tag 'v1.56.0'
golangci/golangci-lint info found version: 1.56.0 for v1.56.0/darwin/arm64
golangci/golangci-lint info installed bin/darwin-arm64/golangci-lint
go fmt ./...
go vet ./...
bin/darwin-arm64/golangci-lint run ./...
pkg/config/config.go:12:2: import 'github.com/go-logr/logr' is not allowed from list 'Main' (depguard)
	"github.com/go-logr/logr"
	^
[...]
controllers/datadogagent/clusteragent.go:1459:18: fmt.Sprintf can be replaced with string addition (perfsprint)
			MatchPattern: fmt.Sprintf("*-app.agent.%s", site),
			              ^
make: *** [lint] Error 1

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label