flake.lock: Update

Flake lock file updates:

• Updated input 'depot/nixpkgs':
    follows 'nixpkgs'
  → 'github:NixOS/nixpkgs/bc194f70731cc5d2b046a6c1b3b15f170f05999c?narHash=sha256-YguPZpiejgzLEcO36/SZULjJQ55iWcjAmf3lYiyV1Fo%3D' (2024-04-19)

flake.lock

@@ -286,9 +286,7 @@
         "nar-serve": "nar-serve",
         "nix-filter": "nix-filter",
         "nix-super": "nix-super",
-        "nixpkgs": [
+        "nixpkgs": "nixpkgs_2",
-          "nixpkgs"
-        ],
         "repin-flake-utils": "repin-flake-utils",
         "systems": "systems_4"
       },
@@ -774,7 +772,7 @@
       "inputs": {
         "flake-parts": "flake-parts_5",
         "haskell-flake": "haskell-flake_2",
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": "nixpkgs_4"
       },
       "locked": {
         "lastModified": 1686721748,
@@ -1183,7 +1181,7 @@
       "inputs": {
         "flake-compat": "flake-compat_6",
         "libgit2": "libgit2_2",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "nixpkgs-regression": "nixpkgs-regression"
       },
       "locked": {
@@ -1207,7 +1205,7 @@
         "flake-parts": "flake-parts_3",
         "hercules-ci-effects": "hercules-ci-effects_2",
         "invokeai-src": "invokeai-src",
-        "nixpkgs": "nixpkgs_4",
+        "nixpkgs": "nixpkgs_5",
         "textgen-src": "textgen-src"
       },
       "locked": {
@@ -1346,6 +1344,22 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1713564160,
+        "narHash": "sha256-YguPZpiejgzLEcO36/SZULjJQ55iWcjAmf3lYiyV1Fo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "bc194f70731cc5d2b046a6c1b3b15f170f05999c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1709083642,
         "narHash": "sha256-7kkJQd4rZ+vFrzWu8sTRtta5D1kBG0LSRYAfhtmMlSo=",
@@ -1361,7 +1375,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1686501370,
         "narHash": "sha256-G0WuM9fqTPRc2URKP9Lgi5nhZMqsfHGrdEbrLvAPJcg=",
@@ -1377,7 +1391,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_4": {
+    "nixpkgs_5": {
       "locked": {
         "lastModified": 1697059129,
         "narHash": "sha256-9NJcFF9CEYPvHJ5ckE8kvINvI84SZZ87PvqMbH6pro0=",
@@ -1393,7 +1407,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_5": {
+    "nixpkgs_6": {
       "locked": {
         "lastModified": 1713297878,
         "narHash": "sha256-hOkzkhLT59wR8VaMbh1ESjtZLbGi+XNaBN6h49SPqEc=",
@@ -1517,7 +1531,7 @@
         "nixified-ai": "nixified-ai",
         "nixos-hardware": "nixos-hardware",
         "nixpak": "nixpak",
-        "nixpkgs": "nixpkgs_5"
+        "nixpkgs": "nixpkgs_6"
       }
     },
     "rust-overlay": {