PHP 8.3 issue - Warning: unserialize(): Extra data starting at offset 767 of 860 bytes in PhpHandler.php on line 41

I notice this issue when i upgrade from php8.2 to php8.3

```
Warning: unserialize(): Extra data starting at offset 767 of 860 bytes in /source/vendor-dev/cboden/ratchet/src/Ratchet/Session/Serialize/PhpHandler.php on line 41

Warning: unserialize(): Extra data starting at offset 6 of 76 bytes in /source/vendor-dev/cboden/ratchet/src/Ratchet/Session/Serialize/PhpHandler.php on line 41
PHP Warning:  unserialize(): Extra data starting at offset 767 of 860 bytes in /source/vendor-dev/cboden/ratchet/src/Ratchet/Session/Serialize/PhpHandler.php on line 41
PHP Warning:  unserialize(): Extra data starting at offset 6 of 76 bytes in /source/vendor-dev/cboden/ratchet/src/Ratchet/Session/Serialize/PhpHandler.php on line 41
```