*: update tiflow dependency

[lidezhu]

What problem does this PR solve?

Issue Number: close #xxx

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

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[ti-chi-bot]

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[gemini-code-assist]

Summary of Changes

Hello @lidezhu, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on maintaining up-to-date project dependencies by upgrading the tiflow library to its latest available version. This ensures the project benefits from any recent improvements, bug fixes, or new features introduced in the tiflow codebase, while also keeping the dependency manifest consistent.

Highlights

• Dependency Update: The tiflow dependency has been updated to a newer version (v0.0.0-20251226072601-0cb0aaf25061).
• Checksum Updates: The go.sum file has been updated to reflect the new checksums for the tiflow dependency.

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[gemini-code-assist]

Code Review

This pull request updates the tiflow dependency. The change itself is straightforward, but the pull request description is missing key information. I've added a comment to go.mod requesting that the rationale for this dependency update be added to the PR description for maintainability. Additionally, the 'Check List' section in the description should be filled out to clarify what testing was performed for this change.

[gemini-code-assist]

Could you please update the pull request description to explain why this dependency is being updated? Dependency updates can introduce significant changes, and it's important for maintainability to document the reason (e.g., is it for a bug fix, a new feature, or a security patch in tiflow?). Without this context, it's difficult to assess the impact of this change.