⬆️ update Zola to 0.22.0

[welpo]

Breaking change

Needs different config if using 0.22.0 VS older versions. Older versions need:

[markdown]
highlight_code = true
bottom_footnotes = true
# To use a Zola built-in theme, CSP needs to allow unsafe-inline for style-src.
highlight_theme = "css"
smart_punctuation = true

Newer:

[markdown]
bottom_footnotes = true
smart_punctuation = true

[markdown.highlighting]
theme = "catppuccin-frappe"
style = "class"

Related: welpo/tabi#611