Switch MigrationCommand from using deprecated DialogHelper to QuestionHelper

A recent commit of migration tool uses `Symfony\Component\Console\Helper\QuestionHelper` instead of the soon to be deprecated `Symfony\Component\Console\Helper\DialogHelper`.  Composer update results in the following error:

` The helper "dialog" is not defined.`

The changes above switches the MigrateCommand from DialogHelper to QuestionHelper.
Requires a bump of the required console component version.