[wt] update to 4.13.4

[toge (toge)]

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version, or no changes were necessary.
• Any fixed CI baseline and CI feature baseline entries are removed from that file, or no entries needed to be changed.
• All patch files in the port are applied and succeed.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Exactly one version is added in each modified versions file.

https://github.com/emweb/wt/releases/tag/4.13.4

[Billy O'Neal (BillyONeal)]

GPT 5.6 Sol identified some vendored 3rd party content with licenses that need to be included, would you consider toge#32 ?

It would be nice to devendor these but I'm guessing it would be painful so not blocking an update on that.