Using composer I tried to update Drupal 8 to 8.5.6. The update wasn't working, so I changed the dependencies to explicitly require 8.5.6. The update began, but it installed Drupal 8.6.0-beta1. The command I used was
composer update drupal/core --with-dependencies -v.
The updates page still says Drupal 8.5.6 is required. I'm not sure where to go from here.
Should I try to roll it back? I tried requiring Drupal 8.6.0-beta2 and Drupal 8.6.0-rc1, but an error suggested not to update to these versions. I want the site live ASAP, and updated to Drupal 8.5.6.