[chore] flake.lock: update inputs

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/797f7dc49e0bc7fab4b57c021cdf68f595e47841' (2024-08-22)
  → 'github:NixOS/nixpkgs/2527da1ef492c495d5391f3bcf9c1dd9f4514e32' (2024-08-24)
• Updated input 'nixvim':
    'github:nix-community/nixvim/4c8d3559ac4548723eeba9861a94ab63219b0d43' (2024-08-23)
  → 'github:nix-community/nixvim/4814147442cd3f12f8160ecad9e36751f68cdc22' (2024-08-27)
• Updated input 'nixvim/git-hooks':
    'github:cachix/git-hooks.nix/6cedaa7c1b4f82a266e5d30f212273e60d62cb0d' (2024-08-21)
  → 'github:cachix/git-hooks.nix/c8a54057aae480c56e28ef3e14e4960628ac495b' (2024-08-23)
• Updated input 'nixvim/nuschtosSearch':
    'github:NuschtOS/search/a05d1805f2a2bc47d230e5e92aecbf69f784f3d0' (2024-08-18)
  → 'github:NuschtOS/search/5a08d691de30b6fc28d58ce71a5e420f2694e087' (2024-08-25)
• Updated input 'nixvim/treefmt-nix':
    'github:numtide/treefmt-nix/1d07739554fdc4f8481068f1b11d6ab4c1a4167a' (2024-08-16)
  → 'github:numtide/treefmt-nix/070f834771efa715f3e74cd8ab93ecc96fabc951' (2024-08-22)
• Updated input 'unstable':
    'github:NixOS/nixpkgs/c374d94f1536013ca8e92341b540eba4c22f9c62' (2024-08-21)
  → 'github:NixOS/nixpkgs/d0e1602ddde669d5beb01aec49d71a51937ed7be' (2024-08-24)

nvim/plugins.nix

@@ -143,9 +143,8 @@ in
     # FIXME: doesn't include formatters
     conform-nvim = {
       enable = true;
-      settings = {
       formatters.nixfmt.command = "${lib.getExe pkgs.nixfmt-rfc-style}";
-        formatters_by_ft = {
+      formattersByFt = {
         "_" = [ "trim_whitespace" ];
         c = [ "clang_format" ];
         cpp = [ "clang_format" ];
@@ -158,7 +157,6 @@ in
         zig = [ "zigfmt" ];
       };
     };
-    };
     gitsigns.enable = true;
     lint = {
       enable = true;