libsideswap-client: 0-unstable-2025-06-05 -> 0-unstable-2025-06-24

[starius]

This is needed to sync it with the version used by upstream: https://github.com/sideswap-io/sideswapclient/blob/v1.8.1/deploy/build_linux.sh

I propose to squash this into NixOS#421242

Motivation for this change

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

Notify maintainers

cc @r-ryantm

[starius]

@emaryn I see now.
I'll close this one.

I opened fresh PR to nixpkgs: NixOS#421333
Would you like to review it?