flake.lock: Update

Flake lock file updates:

```
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/52e3095f6d812b91b22fb7ad0bfc1ab416453634' (2025-03-08)
  → 'github:nixos/nixpkgs/cdd2ef009676ac92b715ff26630164bb88fec4e0' (2025-03-13)
• Updated input 'nixpkgs-unstable':
    'github:nixos/nixpkgs/e3e32b642a31e6714ec1b712de8c91a3352ce7e1' (2025-03-09)
  → 'github:nixos/nixpkgs/6607cf789e541e7873d40d3a8f7815ea92204f32' (2025-03-13)
```

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1741600792,
-        "narHash": "sha256-yfDy6chHcM7pXpMF4wycuuV+ILSTG486Z/vLx/Bdi6Y=",
+        "lastModified": 1741862977,
+        "narHash": "sha256-prZ0M8vE/ghRGGZcflvxCu40ObKaB+ikn74/xQoNrGQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ebe2788eafd539477f83775ef93c3c7e244421d3",
+        "rev": "cdd2ef009676ac92b715ff26630164bb88fec4e0",
         "type": "github"
       },
       "original": {
@@ -36,11 +36,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1741513245,
-        "narHash": "sha256-7rTAMNTY1xoBwz0h7ZMtEcd8LELk9R5TzBPoHuhNSCk=",
+        "lastModified": 1741851582,
+        "narHash": "sha256-cPfs8qMccim2RBgtKGF+x9IBCduRvd/N5F4nYpU0TVE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "e3e32b642a31e6714ec1b712de8c91a3352ce7e1",
+        "rev": "6607cf789e541e7873d40d3a8f7815ea92204f32",
         "type": "github"
       },
       "original": {