chore: Update to latest nixos-unstable-small release

cargo-audit has been dropped to fix an issue with libgit2, which should
be fixed in 1-2 weeks or so. Additionally, nvim-base16 has been renamed
to base16-nvim, which is currently only recognized on -small.

flake.lock

@@ -169,11 +169,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1707175763,
-        "narHash": "sha256-0MKHC6tQ4KEuM5rui6DjKZ/VNiSANB4E+DJ/+wPS1PU=",
+        "lastModified": 1708294481,
+        "narHash": "sha256-DZtxmeb4OR7iCaKUUuq05ADV2rX8WReZEF7Tq//W0+Y=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "f99eace7c167b8a6a0871849493b1c613d0f1b80",
+        "rev": "a54e05bc12d88ff2df941d0dc1183cb5235fa438",
         "type": "github"
       },
       "original": {
@@ -184,16 +184,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1707092692,
-        "narHash": "sha256-ZbHsm+mGk/izkWtT4xwwqz38fdlwu7nUUKXTOmm4SyE=",
+        "lastModified": 1708274875,
+        "narHash": "sha256-BIYMthHTTruzTiS6pQMKbyz8etetUVLC4sl2G1WkfMM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "faf912b086576fd1a15fca610166c98d47bc667e",
+        "rev": "55725130384a70d0803d76a5e595b620762e50b6",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-unstable-small",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small";
 
     home-manager = {
       url = "github:nix-community/home-manager";

home/neovim.nix

@@ -57,7 +57,6 @@ in
     rustfmt
     cargo
     cargo-info
-    cargo-audit
     cargo-license
     cargo-feature
     cargo-tarpaulin
@@ -384,7 +383,7 @@ in
       }
       friendly-snippets
       {
-        plugin = nvim-base16;
+        plugin = base16-nvim;
         type = "lua";
         config = "vim.cmd('colorscheme base16-${config.lib.stylix.scheme.slug}')";
       }

modules/packages.nix

@@ -128,7 +128,7 @@
   ];
 
   nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
-    "osu-lazer-bin-2024.130.2"
+    "osu-lazer-bin-2024.131.0"
   ];
 
   nixpkgs.config.permittedInsecurePackages = [