Bump version for v5.4.3

[Oreoxmt]

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[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• ran-huang

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[Oreoxmt]

/verify

[Oreoxmt]

DNM until #10581 is merged.

[Oreoxmt]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: ce65d52