fix: use provisionerd context when failing job on canceled acquire (#11118)

Spotted during code read. We need to use the provisionerd auth context when failing a job due to a lost provisioner daemon.

coderd/provisionerdserver/provisionerdserver.go

@@ -274,7 +274,8 @@ func (s *server) AcquireJobWithCancel(stream proto.DRPCProvisionerDaemon_Acquire
 		// in the database.  We need to mark this job as failed so the end user can retry if they want to.
 		now := dbtime.Now()
 		err := s.Database.UpdateProvisionerJobWithCompleteByID(
-			context.Background(),
+			//nolint:gocritic // Provisionerd has specific authz rules.
+			dbauthz.AsProvisionerd(context.Background()),
 			database.UpdateProvisionerJobWithCompleteByIDParams{
 				ID: je.job.ID,
 				CompletedAt: sql.NullTime{