flake.lock: update

to a commit recently cached by nixpkgs-cuda-ci

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703559957,
-        "narHash": "sha256-x9PUuMEPGUOMB51zNxrDr2QoHbYWlCS2xhFedm9MC5Q=",
+        "lastModified": 1703637592,
+        "narHash": "sha256-8MXjxU0RfFfzl57Zy3OfXCITS0qWDNLzlBAdwxGZwfY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "75dd68c36f458c6593c5bbb48abfd3e59bfed380",
+        "rev": "cfc3698c31b1fb9cdcf10f36c9643460264d0ca8",
         "type": "github"
       },
       "original": {