Add PHP 8.4 Support

[jakejackson1]

Guidelines

• I understand that if I fail to provide all required details, this issue may be closed without review.

Description of the bug

The general release of PHP 8.4 is scheduled for November 21.

TODO:

• Add PHP 8.4 to the automated testing suite to verify all tests pass
• Review PHP 8.4 upgrade guide and check codebase and dependencies for any problems
• Update Readme
• Update composer.json

QueryPath version

N/A

PHP Version and environment (server type, cli provider etc., enclosing libraries and their respective versions)

N/A

Minimal reproducible PHP+HTML snippet to replicate bug

N/A

[jakejackson1]

Resolved #59