Database: fix v_bucket update

Elwig/Helpers/Billing/Billing.cs

@@ -163,7 +163,7 @@ namespace Elwig.Helpers.Billing {
             using var cmd = cnx.CreateCommand();
             cmd.CommandText = $"""
                 SELECT bin, weight
-                FROM v_bin
+                FROM v_delivery_bin
                 WHERE (year, mgnr) = ({year}, {mgnr})
                 """;