Update DbDumperFactory.php

I am adding $dbConfig['connect_via_database'] in setDbName() as the package doesn't work with pgbouncer the same way it was described here:
laravel/framework#43542

src/Tasks/Backup/DbDumperFactory.php

@@ -40,7 +40,7 @@ public static function createFromConnection(string $dbConnectionName): DbDumper
 
         $dbDumper = static::forDriver($dbConfig['driver'] ?? '')
             ->setHost(Arr::first(Arr::wrap($dbConfig['host'] ?? '')))
-            ->setDbName($dbConfig['database'])
+            ->setDbName($dbConfig['connect_via_database'] ?? $dbConfig['database'])
             ->setUserName($dbConfig['username'] ?? '')
             ->setPassword($dbConfig['password'] ?? '');