Fixes the following issues: - issue #3345563: Deprecated function: unserialize(): Passing null to parameter #1 ($data) of type string is deprecated (Adil_Siddiqui) - issue #3343330:: Dependencies must be prefixed with the project name (Shubham Rathor) - Usage of isMasterRequest replaced by isMainRequest for Drupal 10 compatibility. New cached data available: EAN, UPC and ISBN are now also fetched and stored in the database cache with the 'external_ids' key. The external_ids array can have the following keys: 'ean', 'upc', 'isbn', each of these is an array that can contain multiple values (ISBNs, EANs, UPCs).