Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / modules / media_library / media_library.info.yml

name: 'Media library'
type: module
description: 'Enhances the media list with additional features to easier find and use existing media items.'
package: Core (Experimental)
version: VERSION
core: 8.x
dependencies:
  - drupal:media
  - drupal:views
  - drupal:user