anki: fix build

[wrvsrx]

Currently anki fails to build due to rust 1.89. This PR fix it.

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• 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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[eljamm]

Thanks for the fix, but I think that we should close this in favor of #425219, which also includes it in addition to the version bump.

[euank]

Thanks for noticing the issue and fixing the build @wrvsrx, appreciated!

I'm okay merging this first if we think #425219 will take much longer to merge (though we could cherry-pick the patch file from #425219 to reduce the chance of merge-conflict).

If #425219 is able to land soon, I think it's fine to wait on that and avoid one merge conflict.

[wrvsrx]

Close it in favor of #425219