chore(deps): update github.com/kcp-dev/kubernetes/staging/src/k8s.io/kube-aggregator digest to e006560

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/kcp-dev/kubernetes/staging/src/k8s.io/kube-aggregator	replace	digest	ba4f7d4 → e006560

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
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• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: downloading github.com/kcp-dev/kubernetes/staging/src/k8s.io/kube-aggregator v0.0.0-20260602065202-e006560fc76a
go: downloading k8s.io/streaming v0.0.0
go: github.com/platform-mesh/virtual-workspaces/pkg/apidefinition imports
	github.com/kcp-dev/virtual-workspace-framework/pkg/dynamic/apiserver imports
	k8s.io/kubernetes/pkg/controlplane/apiserver/miniaggregator imports
	k8s.io/kubernetes/pkg/controlplane/apiserver imports
	k8s.io/kube-aggregator/pkg/apiserver imports
	k8s.io/streaming/pkg/httpstream: reading k8s.io/streaming/go.mod at revision v0.0.0: unknown revision v0.0.0