rebase: bump sigs.k8s.io/controller-runtime

Bumps the k8s-dependencies group with 1 update: [sigs.k8s.io/controller-runtime](https://github.com/kubernetes-sigs/controller-runtime).


Updates `sigs.k8s.io/controller-runtime` from 0.20.4 to 0.21.0
- [Release notes](https://github.com/kubernetes-sigs/controller-runtime/releases)
- [Changelog](https://github.com/kubernetes-sigs/controller-runtime/blob/main/RELEASE.md)
- [Commits](https://github.com/kubernetes-sigs/controller-runtime/compare/v0.20.4...v0.21.0)

---
updated-dependencies:
- dependency-name: sigs.k8s.io/controller-runtime
  dependency-version: 0.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: k8s-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/sigs.k8s.io/controller-runtime/pkg/reconcile/reconcile.go

@@ -28,7 +28,17 @@ import (
 
 // Result contains the result of a Reconciler invocation.
 type Result struct {
-	// Requeue tells the Controller to requeue the reconcile key.  Defaults to false.
+	// Requeue tells the Controller to perform a ratelimited requeue
+	// using the workqueues ratelimiter. Defaults to false.
+	//
+	// This setting is deprecated as it causes confusion and there is
+	// no good reason to use it. When waiting for an external event to
+	// happen, either the duration until it is supposed to happen or an
+	// appropriate poll interval should be used, rather than an
+	// interval emitted by a ratelimiter whose purpose it is to control
+	// retry on error.
+	//
+	// Deprecated: Use `RequeueAfter` instead.
 	Requeue bool
 
 	// RequeueAfter if greater than 0, tells the Controller to requeue the reconcile key after the Duration.