Update to Hugo 0.158 #158

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jtbx wants to merge 3 commits from feat/hugo-update into main

2026-06-08

Theme,CI: Update for hugo v0.158 (renamed LanguageCode to Locale)
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2026-06-08 22:48:40 +02:00
Theme: Update for hugo 0.153: switch to dart-sass
libsass will be deprecated in hugo v0.153.

Also fix some SASS 2.0 deprecation notices in our scss files
2026-06-08 21:48:25 +02:00