flake.lock: Update

Flake lock file updates:

• Updated input 'lix':
    '85f282ef57.tar.gz?narHash=sha256-gpd%2BmGQxqVHw2kO6rSPQel8TkChHh9UpqxjsmQi0QJM%3D' (2024-06-19)
  → '6c29a2a6fc.tar.gz?narHash=sha256-SefvvjHF76ng6RLXZ8m4NL700/tIRunDh%2BW3561piNQ%3D' (2024-06-20)

flake.lock

@@ -36,11 +36,11 @@
     "lix": {
       "flake": false,
       "locked": {
-        "lastModified": 1718767907,
-        "narHash": "sha256-gpd+mGQxqVHw2kO6rSPQel8TkChHh9UpqxjsmQi0QJM=",
-        "rev": "85f282ef572577899b3d80ba8def1b920a386218",
+        "lastModified": 1718862908,
+        "narHash": "sha256-SefvvjHF76ng6RLXZ8m4NL700/tIRunDh+W3561piNQ=",
+        "rev": "6c29a2a6fc1043f2a0c17a6304a1624070ded2ed",
         "type": "tarball",
-        "url": "https://git.lix.systems/api/v1/repos/lix-project/lix/archive/85f282ef572577899b3d80ba8def1b920a386218.tar.gz"
+        "url": "https://git.lix.systems/api/v1/repos/lix-project/lix/archive/6c29a2a6fc1043f2a0c17a6304a1624070ded2ed.tar.gz"
       },
       "original": {
         "type": "tarball",