chore(deps): bump go mod github.com/pingcap/tiflow#4870

ti-chi-bot wants to merge 1 commit intorelease-8.5pingcap/ticdc:release-8.5from

fix/release-8.5/update-dep-tiflowpingcap/ticdc:fix/release-8.5/update-dep-tiflowCopy head branch name to clipboard