flake.{nix,lock}: update Nix derivations

Author: rv-auditor

flake.lock

@@ -16,7 +16,7 @@
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
     uv2nix.inputs.nixpkgs.follows = "nixpkgs-unstable";
     # uv2nix.inputs.nixpkgs.follows = "nixpkgs";
-    pyproject-build-systems.url = "github:pyproject-nix/build-system-pkgs/795a980d25301e5133eca37adae37283ec3c8e66";
+    pyproject-build-systems.url = "github:pyproject-nix/build-system-pkgs/042904167604c681a090c07eb6967b4dd4dae88c";
     pyproject-build-systems = {
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.uv2nix.follows = "uv2nix";