Hugo 0.60.1: A couple of Bug Fixes

This is a bug-fix release with a couple of important fixes.

• deps: Update minify 86a5b59f @MeiK2333 #6475
• Fix headless regression bb80fff6 @bep #6552
• deps: Update Goldmark 347cfb0c @bep #6549#6551
• hugolib: Fix timeout number parsing for YAML/JSON config b60ae35b @bep #6555