[BUG]: Can't build go/agents/llm-auditor

[djoreilly]

Name of sample affected

https://github.com/google/adk-samples/tree/a7621a51405eb612fb750cfeb8a3303adcdb140c/go/agents/llm-auditor

Description of issue

Package dependency google.golang.org/adk/cmd/restapi/services doesn't exist.

Environment

Local go version go1.25.4 linux/amd64

Reproduction steps or code

$ go mod init llmauditor
$ go mod tidy

Error log

go: finding module for package google.golang.org/adk/cmd/restapi/services
go: llmauditor/cmd imports
        google.golang.org/adk/cmd/restapi/services: module google.golang.org/adk@latest found (v0.1.0), but does not contain package google.golang.org/adk/cmd/restapi/services