chore(go.mod/go.sum): update go module directive to v1.27.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go (source)	golang	minor	1.26.6 → 1.27.0

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Release Notes

golang/go (go)

v1.27.0

v1.26.7

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Configuration

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• Automerge
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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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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
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: downloading github.com/pkg/errors v0.9.1
go: downloading github.com/sap/admission-webhook-runtime v0.1.105
go: downloading k8s.io/api v0.36.4
go: downloading k8s.io/apimachinery v0.36.4
go: downloading k8s.io/klog/v2 v2.140.0
go: downloading github.com/go-logr/logr v1.4.4
go: downloading github.com/onsi/ginkgo/v2 v2.32.1
go: downloading github.com/onsi/gomega v1.42.1
go: downloading k8s.io/kube-openapi v0.0.0-20260317180543-43fb72c5454a
go: downloading sigs.k8s.io/structured-merge-diff/v6 v6.3.3
go: downloading github.com/google/go-cmp v0.7.0
go: downloading gopkg.in/inf.v0 v0.9.1
go: downloading k8s.io/utils v0.0.0-20260210185600-b8788abfbbc2
go: downloading sigs.k8s.io/randfill v1.0.0
go: downloading sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730
go: downloading github.com/json-iterator/go v1.1.12
go: downloading go.yaml.in/yaml/v2 v2.4.3
go: downloading golang.org/x/sys v0.46.0
go: downloading github.com/Masterminds/semver/v3 v3.4.0
go: downloading go.yaml.in/yaml/v3 v3.0.4
go: downloading golang.org/x/net v0.56.0
go: downloading github.com/fxamacker/cbor/v2 v2.9.0
go: downloading github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
go: downloading github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee
go: downloading github.com/go-task/slim-sprig/v3 v3.0.0
go: downloading golang.org/x/tools v0.47.0
go: downloading golang.org/x/text v0.39.0
go: downloading github.com/x448/float16 v0.8.4
go: downloading github.com/google/pprof v0.0.0-20260402051712-545e8a4df936
go: downloading golang.org/x/sync v0.21.0
go: downloading golang.org/x/mod v0.37.0
go: github.com/sap/image-mapper/cmd/webhook imports
	github.com/sap/admission-webhook-runtime/pkg/admission: github.com/sap/admission-webhook-runtime@v0.1.105: read "https://proxy.golang.org/github.com/sap/admission-webhook-runtime/@v/v0.1.105.zip": stream error: stream ID 99; INTERNAL_ERROR; received from peer