No colormap attribute in GLMakie.violin()

```
(@v1.12) pkg> st -m Makie
Status `~/.julia/environments/v1.12/Manifest.toml`
  [ee78f7c6] Makie v0.24.8

(@v1.12) pkg> st -m GLMakie
Status `~/.julia/environments/v1.12/Manifest.toml`
  [e9467ef8] GLMakie v0.13.8
```

Colormap attribute is missing for violin plots.