: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:

Rocks In-Progress:

Rocks Result:

### 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
```