Add Catppuccin latte to light syntax themes

[dvic]

I'm using https://github.com/catppuccin/bat but the latte theme is displayed as dark:

❯ delta --list-syntax-themes

Light syntax themes:
    GitHub
    Monokai Extended Light
    OneHalfLight
    Solarized (light)
    gruvbox-light

Dark syntax themes:
    1337
    Catppuccin-frappe
    Catppuccin-latte
    Catppuccin-macchiato
    Catppuccin-mocha
    Coldark-Cold
    Coldark-Dark
    DarkNeon
    Dracula
    Monokai Extended
    Monokai Extended Bright
    Monokai Extended Origin
    Nord
    OneHalfDark
    Solarized (dark)
    Sublime Snazzy
    TwoDark
    Visual Studio Dark+
    ansi
    base16
    base16-256
    gruvbox-dark
    zenburn

[dvic]

I've tested it locally, it looks beautiful ;)

[dandavison]

Thanks!