tidb-server v7.1.5

For new features, improvements, and bug fixes released in 7.1.5 for tidb-server, see TiDB 7.1.5 release notes.
See the difference from the issue perspective:

- pingcap/tidb#51540

• #51326

• #51527

• #51699

• #40463

• #51581

• #51596

• #50614

• #51301

• #48230

• #52255

• #52215

• #51925

• #52207

• #36374

• #52518

• #51765

• #51883

• #51383

• #51800

• #51399

• #52425

• #51762, close #51807

• #51547

• #51954

• #51554, close #51570

• #51431

• #49506

• #51962

• #47475

• #51784

• #52312

• #50711

• #51838

• #50810

• #42734

• #49552

• #51560

• #47060, close #52335

• #47060, close #52335

• #51572

• #51107

• for AUTO_ID_CACHE=1 (#52602) (#52675

• #52547

• #51162

• #46602

• #50803

• #52082

• #52597

• #52654

• #51873

• #52733

• #52800

• #52762

• #46545

• #52219

• #51456

• #52772