chore: update gomod2nix.toml

Author: renovate[bot]

nix/packages/treefmt/gomod2nix.toml

@@ -120,8 +120,8 @@ schema = 3
     version = "v0.9.0"
     hash = "sha256-sGvzGqaaXE5dxohKkpbJMnu+bMmismsSqr8YMtrK+Rc="
   [mod."golang.org/x/sys"]
-    version = "v0.27.0"
-    hash = "sha256-BXQcF9RrJ55Pq7Nl67TeFGkgkyuKkQ8hHKN4/L4ggWc="
+    version = "v0.28.0"
+    hash = "sha256-kzSlDo5FKsQU9cLefIt2dueGUfz9XuEW+mGSGlPATGc="
   [mod."golang.org/x/term"]
     version = "v0.25.0"
     hash = "sha256-vwNqnxEcgeVxQxdKBUnkb7y9jg6LlNDJxfG1GugSeRQ="