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

[yaffs-website] / web / core / modules / media_library / tests / modules / media_library_test / config / install / field.field.media.type_one.field_media_test.yml

langcode: en
status: true
dependencies:
  config:
    - field.storage.media.field_media_test
    - media.type.type_one
id: media.type_one.field_media_test
field_name: field_media_test
entity_type: media
bundle: type_one
label: field_media_test
description: ''
required: false
translatable: true
default_value: {  }
default_value_callback: ''
settings: {  }
field_type: string