bump version for 7.1.3

[ran-huang]

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• v7.6 (TiDB 7.6 versions)
• v7.5 (TiDB 7.5 versions)
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-20 08:05:00.018596408 +0000 UTC m=+1034591.055823336: ☑️ agreed by Oreoxmt.

[ran-huang]

/rebase

[ran-huang]

/approve

[ti-chi-bot]

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This pull-request has been approved by: ran-huang

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