Character Blueprints not checking if blueprint already exists on another character

[Dusty-Meg]

• Problem:
  Character blueprints endpoint failing due to Integrity constraint violation: 1062 Duplicate entry
  This looks to be due to the blueprint item_id already existing in the database but under a different character.
  I checked the blueprint that has been throwing one of the errors and it was a blueprint that I had contracted between characters.
  Guessing it is trying to add the blueprint into the database before removing it from the previous character.

• Expected:
  Blueprints job succeeds and updates all characters blueprints

• Logs / Screenshots / Proof:
  PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '1036646390848' for key 'PRIMARY' in /var/www/seat/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:112

• Version Info:
  Docker install.
  +--------------------+---------------+----------------+
  | Package Name | Local Version | Latest Version |
  +--------------------+---------------+----------------+
  | SeAT API | 4.6.0 | 4.6.0 |
  | SeAT Console | 4.8.0 | 4.8.0 |
  | SeAT Eve API | 4.13.1 | 4.13.1 |
  | SeAT Notifications | 4.3.1 | 4.3.1 |
  | SeAT Services | 4.2.0 | 4.2.0 |
  | SeAT Web | 4.14.1 | 4.14.2 |
  +--------------------+---------------+----------------+