Auto-update ucx to 1.19.1

[waruqi]

New version of ucx detected (package version: 1.18.0, last github version: 1.19.1)

[gemini-code-assist]

Summary of Changes

Hello @waruqi, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the ucx package definition to include the latest stable version, 1.19.1. This ensures that the project can leverage the most recent features, bug fixes, and performance improvements provided by the updated UCX library.

Highlights

• UCX Version Update: The ucx package has been updated to version 1.19.1 by adding its version and SHA-256 hash to the xmake.lua configuration file.

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[gemini-code-assist]

Code Review

This pull request is an automated update for the ucx package, bumping its version to 1.19.1. The change correctly adds the new version and its SHA256 checksum to the package definition file. The modification maintains the existing convention of listing versions in descending order. The change is straightforward and appears correct. This PR is ready to be merged.