chore: update nix version

flake.lock

@@ -193,16 +193,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1719663039,
-        "narHash": "sha256-tXlrgAQygNIy49LDVFuPXlWD2zTQV9/F8pfoqwwPJyo=",
+        "lastModified": 1719707984,
+        "narHash": "sha256-RoxIr/fbndtuKqulGvNCcuzC6KdAib85Q8gXnjzA1dw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4a1e673523344f6ccc84b37f4413ad74ea19a119",
+        "rev": "7dca15289a1c2990efbe4680f0923ce14139b042",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-23.11",
+        "ref": "nixos-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -2,7 +2,7 @@
   description = "Cashu Development Kit";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
 
     flakebox = {
       url = "github:rustshop/flakebox";