Add Symfony 7 and 8 compatibility, add default encryptor and truncators - #3

src/Logger/DataTransformer.php:9:7: ClassMustBeFinal: Class Aubes\ShadowLoggerBundle\Logger\DataTransformer is never extended and is not part of the public API, and thus must be made final. (see https://psalm.dev/361)

src/Encryptor/DefaultEncryptor.php:26:45: ArgumentTypeCoercion: Argument 1 of random_bytes expects int<1, max>, but parent type int provided (see https://psalm.dev/193)