Test

fix: remove duplicated `v` in version showing in the banner #1489

Job	Run time
Backend - Integration - TiDB@nightly	15m 23s
Backend - Unit	53s
Backend - Integration - TiDB@^6.0	2m 18s
Backend - Integration - TiDB@^5.4	4m 15s
Backend - Integration - TiDB@^5.0	4m 17s
	27m 6s

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