satellite/metabase/metabasetest: use test migration for benchmarks

Change-Id: I575d29604d0e533159906f5272e82fba4f37923b

satellite/satellitedb/satellitedbtest/run.go

@@ -271,7 +271,7 @@ func Bench(b *testing.B, bench func(b *testing.B, db satellite.DB)) {
 				}
 			}()
 
-			err = db.MigrateToLatest(ctx)
+			err = db.Testing().TestMigrateToLatest(ctx)
 			if err != nil {
 				b.Fatal(err)
 			}