PHP 8.1 - Deprecated: Implicit conversion from float

Starting in PHP 8.1, I'm getting the following deprecation warning when creating a zip file:

```
Deprecated: Implicit conversion from float 1.8446744069414584E+19 to int loses precision in /tmp/test/vendor/barracudanetworks/archivestream-php/src/Archive.php on line 439
```

Thanks for your help.
