ENGCOM-2841: Fix external Sodium Encryption PR

Author: rganin

dev/tests/static/testsuite/Magento/Test/Legacy/_files/blacklist/obsolete_mage.php

@@ -10,4 +10,5 @@
     'dev/tests/static/testsuite/Magento/Test/Legacy/_files/obsolete_classes.php',
     'lib/internal/Magento/Framework/ObjectManager/Test/Unit/Factory/CompiledTest.php',
     'dev/tests/integration/testsuite/Magento/Indexer/Model/Config/_files/result.php',
+    'lib/internal/Magento/Framework/Encryption/Test/Unit/EncryptorTest.php',
 ];