Update walrus

[jeffcharles]

Description of the change

Updating walrus including a minor code change to account for a new page size argument required. We pass None because we're not customizing the page size.

Why am I making this change?

#714 tried to update Walrus along with other dependencies but failed due to the required code change.

Checklist

• I've updated the relevant CHANGELOG files if necessary. Changes to javy-cli and javy-core do not require updating CHANGELOG files.
• I've updated the relevant crate versions if necessary. Versioning policy for library crates
• I've updated documentation including crate documentation if necessary.