Log Message:
hugo: update to 0.122.0

The big new thing in Hugo 0.122.0 is LaTeX or TeX typsetting directly from
Markdown using standard syntax. Thanks to @j2kun and @jmooring for making this
happen.

Bug fixes

- tpl/tplimpl: Fix incorrect lastBuildDate
- tpl: fix incorrect lastBuildDate f281ef8

Improvements

- markup/goldmark: Support passthrough extension
- parser/metadecoders: Accumulate org keywords into arrays
- parser/metadecoders: Add CSV lazyQuotes option to transform.Unmarshal