flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/a731b45590a5169542990c36ffcde6cebd9a3356?narHash=sha256-WoKZDlBEdMhP%2BhjquBAh0BhUJbcH2%2BU8g2mHOr1mv8I%3D' (2024-08-11)
  → 'github:nixos/nixpkgs/c3d4ac725177c030b1e289015989da2ad9d56af0?narHash=sha256-sqLwJcHYeWLOeP/XoLwAtYjr01TISlkOfz%2BNG82pbdg%3D' (2024-08-15)
• Updated input 'nixpkgs-unstable':
    'github:nixos/nixpkgs/a58bc8ad779655e790115244571758e8de055e3d?narHash=sha256-dFZRVSgmJkyM0bkPpaYRtG/kRMRTorUIDj8BxoOt1T4%3D' (2024-08-11)
  → 'github:nixos/nixpkgs/c3aa7b8938b17aebd2deecf7be0636000d62a2b9?narHash=sha256-med8%2B5DSWa2UnOqtdICndjDAEjxr5D7zaIiK4pn0Q7c%3D' (2024-08-14)

flake.lock

@@ -467,11 +467,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1723400035,
+        "lastModified": 1723688146,
-        "narHash": "sha256-WoKZDlBEdMhP+hjquBAh0BhUJbcH2+U8g2mHOr1mv8I=",
+        "narHash": "sha256-sqLwJcHYeWLOeP/XoLwAtYjr01TISlkOfz+NG82pbdg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a731b45590a5169542990c36ffcde6cebd9a3356",
+        "rev": "c3d4ac725177c030b1e289015989da2ad9d56af0",
         "type": "github"
       },
       "original": {
@@ -559,11 +559,11 @@
     },
     "nixpkgs-unstable_2": {
       "locked": {
-        "lastModified": 1723362943,
+        "lastModified": 1723637854,
-        "narHash": "sha256-dFZRVSgmJkyM0bkPpaYRtG/kRMRTorUIDj8BxoOt1T4=",
+        "narHash": "sha256-med8+5DSWa2UnOqtdICndjDAEjxr5D7zaIiK4pn0Q7c=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a58bc8ad779655e790115244571758e8de055e3d",
+        "rev": "c3aa7b8938b17aebd2deecf7be0636000d62a2b9",
         "type": "github"
       },
       "original": {