[docs] Add xz_utils in version ranges

[uilianries]

Summary

Changes to recipe: xz_utils/[>=5.4.5 <6]

Motivation

The xz_utils is used by 23 recipes in CCI right now and most of them are consuming the latest version available in Conan Center: 5.4.5.

The project looks pretty stable and the backward compatibility is checked until the version 2.3.1: https://abi-laboratory.pro/?view=timeline&l=xz

I didn't find any specific evidence in documentation or in the project repository, ensuring about backward support, so I opened an issue questioning about: tukaani-project/xz#132.

Details

Using a grep you can find how many recipes are using xz_utils:

find . -name conanfile.py -exec fgrep xz_utils/ {} +

---

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan