flake.lock: Update (#463)

Flake lock file updates:

• Updated input 'git-hooks-nix':
    'github:cachix/git-hooks.nix/8baab58' (2026-03-07)
  → 'github:cachix/git-hooks.nix/f799ae9' (2026-03-21)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/c06b4ae' (2026-03-13)
  → 'github:nixos/nixpkgs/b40629e' (2026-03-18)

flake.lock

@@ -43,11 +43,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1772893680,
-        "narHash": "sha256-JDqZMgxUTCq85ObSaFw0HhE+lvdOre1lx9iI6vYyOEs=",
+        "lastModified": 1774104215,
+        "narHash": "sha256-EAtviqz0sEAxdHS4crqu7JGR5oI3BwaqG0mw7CmXkO8=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "8baab586afc9c9b57645a734c820e4ac0a604af9",
+        "rev": "f799ae951fde0627157f40aec28dec27b22076d0",
         "type": "github"
       },
       "original": {
@@ -79,11 +79,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1773389992,
-        "narHash": "sha256-wvfdLLWJ2I9oEpDd9PfMA8osfIZicoQ5MT1jIwNs9Tk=",
+        "lastModified": 1773821835,
+        "narHash": "sha256-TJ3lSQtW0E2JrznGVm8hOQGVpXjJyXY2guAxku2O9A4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "c06b4ae3d6599a672a6210b7021d699c351eebda",
+        "rev": "b40629efe5d6ec48dd1efba650c797ddbd39ace0",
         "type": "github"
       },
       "original": {