chore: bump the k8s group in /test/e2e with 1 update

Bumps the k8s group in /test/e2e with 1 update: [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes).

- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](kubernetes/kubernetes@v1.26.7...v1.26.8)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: k8s
...

Signed-off-by: dependabot[bot] <[email protected]>

test/e2e/go.mod

@@ -38,7 +38,7 @@ require (
 	k8s.io/api v0.26.3
 	k8s.io/apimachinery v0.26.3
 	k8s.io/client-go v0.26.3
-	k8s.io/kubernetes v1.26.7
+	k8s.io/kubernetes v1.26.8
 	k8s.io/utils v0.0.0-20221128185143-99ec85e7a448
 )
 

test/e2e/go.sum

@@ -681,8 +681,8 @@ k8s.io/kubectl v0.26.3 h1:bZ5SgFyeEXw6XTc1Qji0iNdtqAC76lmeIIQULg2wNXM=
 k8s.io/kubectl v0.26.3/go.mod h1:02+gv7Qn4dupzN3fi/9OvqqdW+uG/4Zi56vc4Zmsp1g=
 k8s.io/kubelet v0.26.3 h1:6WT2dX/39cvc3q25xkFmMIT2EoV+gS/8gxZmUiDvG4U=
 k8s.io/kubelet v0.26.3/go.mod h1:yd5GJNMOFLMKxP1rmZhg6etbYAbdTimF87fBIBtRimA=
-k8s.io/kubernetes v1.26.7 h1:524bMbtT/JVip9yO/nm0vrNsS/pswo0BS5U11nvjN6U=
-k8s.io/kubernetes v1.26.7/go.mod h1:EBE8dfGfk2sZ3yzZVQjr1wQ/k28/wwaajL/1+77Cjmg=
+k8s.io/kubernetes v1.26.8 h1:vC3oBFD2H8A1c7L0WFMWKQYN5xRJy93QOCoQWNe1CF8=
+k8s.io/kubernetes v1.26.8/go.mod h1:EBE8dfGfk2sZ3yzZVQjr1wQ/k28/wwaajL/1+77Cjmg=
 k8s.io/pod-security-admission v0.26.3 h1:MvPlB/cZW4x64VgZ3WbgnfPWpgtZY4w6ZllIMWmEy9Y=
 k8s.io/pod-security-admission v0.26.3/go.mod h1:9I+AV3O26WYsn4jpCD8WvdJy3xvqBWYz43kz0jwco1k=
 k8s.io/utils v0.0.0-20221128185143-99ec85e7a448 h1:KTgPnR10d5zhztWptI952TNtt/4u5h3IzDXkdIMuo2Y=