chore: update npins dependencies

Automated update of Nix dependencies via npins.

    Updated packages:
    +      "hash": "sha256-XH6awru9NnBc/m+2YhRNT8r1PAKEiPGF3gs//F3ods0="
+      "revision": "a1ef738813b15cf8ec759bdff5761b027e3e1d23",
+      "hash": "sha256-Efs3VUPelRduf3PpfPP2ovEB4CXT7vHf8W+xc49RL/U="

nix/sources.json

@@ -28,8 +28,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.05pre917540.5c2bc52fb9f8/nixexprs.tar.xz",
-      "hash": "sha256-g5DRB9fAyEv6Xf41Bj9RpVl9th0Zz+v1jgvJVg51W3w="
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.05pre930822.ed142ab1b3a0/nixexprs.tar.xz",
+      "hash": "sha256-XH6awru9NnBc/m+2YhRNT8r1PAKEiPGF3gs//F3ods0="
     },
     "pre-commit": {
       "type": "Git",
@@ -40,9 +40,9 @@
       },
       "branch": "master",
       "submodules": false,
-      "revision": "b68b780b69702a090c8bb1b973bab13756cc7a27",
-      "url": "https://github.com/cachix/git-hooks.nix/archive/b68b780b69702a090c8bb1b973bab13756cc7a27.tar.gz",
-      "hash": "sha256-t3T/xm8zstHRLx+pIHxVpQTiySbKqcQbK+r+01XVKc0="
+      "revision": "a1ef738813b15cf8ec759bdff5761b027e3e1d23",
+      "url": "https://github.com/cachix/git-hooks.nix/archive/a1ef738813b15cf8ec759bdff5761b027e3e1d23.tar.gz",
+      "hash": "sha256-Efs3VUPelRduf3PpfPP2ovEB4CXT7vHf8W+xc49RL/U="
     }
   },
   "version": 7