flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/cd9eead62d1cb6dd692cd87c209e0bc48f733669' (2023-04-02)
  → 'github:NixOS/nixpkgs/5d91a896449650d13fbba8c8abc65d1615c2b654' (2023-04-23)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/a082287718105c284475df18b882a76312dea0d0' (2023-03-30)
  → 'github:numtide/treefmt-nix/b25d1a3c2c7554d0462ab1dfddf2f13128638b90' (2023-04-14)

flake.lock

@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1680450296,
-        "narHash": "sha256-4SJqREZkmyQufQcudS+j0WqsHeRDE6jyFw6l6QcrMrE=",
+        "lastModified": 1682266827,
+        "narHash": "sha256-K+ZriFdFKMWbJ+IjJf3LJAKp3KePOvO76W2mzlxdsA4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "cd9eead62d1cb6dd692cd87c209e0bc48f733669",
+        "rev": "5d91a896449650d13fbba8c8abc65d1615c2b654",
         "type": "github"
       },
       "original": {
@@ -50,11 +50,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1680218481,
-        "narHash": "sha256-VhkSVeKXbZtdaT41Kn3QuFE7OnXHM4UbMlqBez+tRL0=",
+        "lastModified": 1681486253,
+        "narHash": "sha256-EjiQZvXQH9tUPCyLC6lQpfGnoq4+kI9v59bDJWPicYo=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "a082287718105c284475df18b882a76312dea0d0",
+        "rev": "b25d1a3c2c7554d0462ab1dfddf2f13128638b90",
         "type": "github"
       },
       "original": {