Sample code was written for an older ADK version

[mehrworks]

the project uses google.golang.org/adk v0.3.0

Breaking Changes Identified:
- google.golang.org/adk/cmd/launcher/adk package removed.
- services.NewStaticAgentLoader removed.
Fix: Refactored main.go and auditor.go to use the new v0.3.0 APIs:
- Switched to agent.NewMultiLoader.
- Updated launcher configuration to use launcher.Config and full.NewLauncher().

• Verification:
  • go mod tidy now passes.

[google-cla]

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