Update the flake inputs

The inputs had been pinned for a year.

Verified on aarch64-darwin: `nix build` succeeds and the resulting `bin/serena`
reports `Serena 1.7.1.dev0`. The Linux packages and devShell evaluate cleanly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755615617,
+        "lastModified": 1787736819,
-        "narHash": "sha256-HMwfAJBdrr8wXAkbGhtcby1zGFvs+StOp19xNsbqdOg=",
+        "narHash": "sha256-cV5xEJJK3BvhU8rEd4mC9UsmDi5qscv/kzGPhBRC5WA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "20075955deac2583bb12f07151c2df830ef346b4",
+        "rev": "9fbb54b33e91ee4ca368e35a78e0613c720600b3",
         "type": "github"
       },
       "original": {
@@ -47,11 +47,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755484659,
+        "lastModified": 1786936886,
-        "narHash": "sha256-2FfbqsaHVQd12XFFUAinIMAuGO3853LONmva1gT3vKw=",
+        "narHash": "sha256-8SFyOdmcG6Nsh/JzlH812lTI/v+ur06fpQhj/acNn8k=",
         "owner": "pyproject-nix",
         "repo": "build-system-pkgs",
-        "rev": "9778e87c2361810ff15e287ca5895c9da4a0e900",
+        "rev": "90ffdeee1a4929b231913df067448cd9803d3e07",
         "type": "github"
       },
       "original": {
@@ -67,11 +67,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755886095,
+        "lastModified": 1786031528,
-        "narHash": "sha256-oMQ1YERKqiac28LB1cKjl4d0gjvK98SbGejFMfK0WGE=",
+        "narHash": "sha256-cROiHKO3UbIKqF5FG5NikvydzlfIj4EcR1Cty9qOVt4=",
         "owner": "pyproject-nix",
         "repo": "pyproject.nix",
-        "rev": "7ea903d50c20d4d3ea45ccaad7ee0d21996780c9",
+        "rev": "1b1485546d85f6f6c7aadb10c4923dbc09633263",
         "type": "github"
       },
       "original": {
@@ -114,11 +114,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755887980,
+        "lastModified": 1786615403,
-        "narHash": "sha256-MD1IhwuoDXQSYcQ/JfEpMxrk6pPl+aHPXSqZLOXLHks=",
+        "narHash": "sha256-U++y7nM/6xiEcWI7q4fQoPZjPvRaTwkSqzBOVoEBjUE=",
         "owner": "pyproject-nix",
         "repo": "uv2nix",
-        "rev": "76778b5f457e416688324d19d8f02ec5e22cbe0c",
+        "rev": "4b59abb2ae1896d2a0e1abfc47fbc9bf985ea730",
         "type": "github"
       },
       "original": {