chore(deps): bump go mod github.com/pingcap/tiflow

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What problem does this PR solve?

Auto generated by bot.
Issue Number: ref #1074

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Code Review

This pull request performs a dependency update across go.mod and go.sum. Key changes include updating kvproto, tidb, tiflow, and grpc to newer versions, adding github.com/JohnCGriffin/overflow, and replacing apache/arrow with apache/arrow-go/v18. Several unused dependencies, including go-reflect and parquet-go, were removed. I have no feedback to provide.