chore(go): bump k8s.io/client-go from 0.26.1 to 0.28.1

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.26.1 to 0.28.1.
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.26.1...v0.28.1)

---
updated-dependencies:
- dependency-name: k8s.io/client-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -19,9 +19,9 @@ require (
 	github.com/tonglil/buflogr v1.0.1
 	go.uber.org/zap v1.25.0
 	golang.org/x/oauth2 v0.12.0
-	k8s.io/api v0.26.1
-	k8s.io/apimachinery v0.26.7
-	k8s.io/client-go v0.26.1
+	k8s.io/api v0.28.1
+	k8s.io/apimachinery v0.28.1
+	k8s.io/client-go v0.28.1
 	k8s.io/klog/v2 v2.100.1
 	knative.dev/pkg v0.0.0-20230221145627-8efb3485adcf
 	sigs.k8s.io/controller-runtime v0.14.6
@@ -51,7 +51,7 @@ require (
 	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/gnostic v0.6.9 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/go-github/v53 v53.2.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
@@ -75,7 +75,6 @@ require (
 	github.com/prometheus/common v0.42.0 // indirect
 	github.com/prometheus/procfs v0.10.1 // indirect
 	github.com/prometheus/statsd_exporter v0.23.0 // indirect
-	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/spf13/pflag v1.0.6-0.20210604193023-d5e0c0615ace // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
@@ -100,8 +99,8 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/apiextensions-apiserver v0.26.1 // indirect
 	k8s.io/component-base v0.26.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20230308215209-15aac26d736a // indirect
-	k8s.io/utils v0.0.0-20230209194617-a36077c30491 // indirect
+	k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect
+	k8s.io/utils v0.0.0-20230406110748-d93618cff8a2 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect