Rocks install catppuccin.nvim not working

### Description Running :Rocks install catppuccin.nvim in Neovim does not succeed. The plugin cannot be installed via LuaRocks, which prevents using Catppuccin through this method. ### Neovim version ```markdown NVIM v0.12.2 Build type: Release LuaJIT 2.1.1774896198 ``` ### Terminal and multiplexer alacritty 0.17.0 (94e7c88) ### Catppuccin version / branch / rev catppuccin luarocks ### Steps to reproduce Try install: <img width="265" height="128" alt="Image" src="https://github.com/user-attachments/assets/a52782c9-8f54-457c-9141-e3dd33936216" /> Rocks In-Progress: <img width="319" height="138" alt="Image" src="https://github.com/user-attachments/assets/8c0bef60-6298-4d97-bc5b-1742118b3043" /> Rocks Result: <img width="483" height="122" alt="Image" src="https://github.com/user-attachments/assets/caf96611-5618-40b5-b846-2c413ab13187" /> ### Expected behavior The Catppuccin theme plugin installs successfully via :Rocks. ### Actual behavior Installation fails with an error message. Rocks cannot find or install the package catppuccin.nvim. ### Repro ```Lua -- Open Neovim and run: :Rocks install catppuccin.nvim ```