Fix/verify code

[lwnmengjing]

Description

Checklist

• the pull request title describes what this PR does (not a vague title like Update index.md)
• the pull request targets the default branch of the repository (main)
• no unintentional fmt.Print left behind after debugging
• did I name variables, methods and classes according to the naming rules? (https://go.dev/doc/effective_go#names)
• caught exceptions or throw them to the upper level for processing, not ignored (https://go.dev/doc/effective_go#errors)
• did I explain all possible solutions and why I chose the one I did?
• added any comments to make new functions clearer
• tests are added for the changes I made (if any source code was modified)
• documentation added or updated
• I have run the project locally and verified that there are no errors
• instructions for how reviewers can test the code locally
• screenshot of the feature/bug fix (if applicable)

[Copilot]

Pull Request Overview

This PR updates dependencies and adds verification code checking logic to prevent duplicate code generation. The changes focus on preventing the generation of new verification codes when one already exists for a given key.

• Updates various Go module dependencies to newer versions
• Adds logic to check for existing verification codes before generating new ones

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
pkg/config/storage/cache/verify_code.go	Adds pre-check to return empty string if verification code already exists for the key
go.mod	Updates multiple dependencies including AWS SDK, gRPC, OpenTelemetry, and other libraries to newer versions

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}