python313Packages.libxml2: force rebuild for code signing issue

[emilazy]

Fixes https://hydra.nixos.org/build/315745363.

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin itstool
• Tested, as applicable:
  • NixOS tests in nixos/tests.
  • Package tests at passthru.tests.
  • Tests in lib/tests or pkgs/test for functions and "core" functionality.
• Ran nixpkgs-review on this PR. See nixpkgs-review usage.
• Tested basic functionality of all binary files, usually in ./result/bin/.
• Nixpkgs Release Notes
  • Package update: when the change is major or breaking.
• NixOS Release Notes
  • Module addition: when adding a new NixOS module.
  • Module update: when the change is significant.
• Fits CONTRIBUTING.md, pkgs/README.md, maintainers/README.md and other READMEs.

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[github-actions]

This report is automatically generated by the PR / Check / cherry-pick CI workflow.

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Please follow the backporting guidelines and cherry-pick with the -x flag.
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Not a backport

[vcunat]

Not a huge rebuild. Lucky 🎉