chore: bump sigs.k8s.io/controller-runtime/tools/setup-envtest

[tiffanny29631]

Bumps sigs.k8s.io/controller-runtime/tools/setup-envtest , K8s packages and Go.

[google-oss-prow]

Skipping CI for Draft Pull Request.
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[gemini-code-assist]

Code Review

This pull request updates project dependencies and vendored packages, including upgrading the Go version to 1.26.0 and updating various Kubernetes and protobuf libraries. Key changes in the vendored code include: enhancing metav1.FieldsV1 to support a string-backed representation using unique.Handle[string]; introducing new validation utilities such as Discriminated rules, path segment name validation, and additional limit checks; adding alpha support for sharded list and watch features via ShardSelector and ShardInfo; refactoring network helpers to support contextual logging with klog.Logger; and adding a fixed-size circular buffer TypedRingFixed in k8s.io/utils. All of the reviewer's comments were filtered out as they pertained to version numbers in configuration files, so we have no further feedback to provide.

[tiffanny29631]

Closes #2177

[tiffanny29631]

/test all

[Camila-B]

/lgtm

[google-oss-prow]

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