libidn2: 2.3.2 -> 2.3.4

[henrirosten]

Description of changes

Update libidn2 to current latest version, see: https://lists.gnu.org/archive/html/info-gnu/2022-10/msg00004.html and https://gitlab.com/libidn/libidn2/-/releases.

This change was motivated by manual test run of https://github.com/tiiuae/sbomnix/tree/main/scripts/nixupdate, which pointed out that libidn2 is currently not up-to-date in nix unstable.

Manual update attempt using the earlier mirror mirror://gnu/libidn/ failed due to:

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
do not know how to unpack source archive /nix/store/1v5l3gnb0j8ckwv6ms17gl4b6g5nbx3j-libidn2-2.3.4.tar.gz

Which is assumably the same reason why r-ryantm also failed to automatically update: https://r.ryantm.com/log/libidn2/2023-03-05.log.

It's not fully clear why changing the mirror to master repository (https://ftp.gnu.org/pub/gnu/) resolves the update issue.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review/1016/47

[trofi]

Pulled as is. Thank you!