Hugo 0.58.1: A couple of Bug Fixes

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

• Avoid writing the same processed image to /public twice 9442937d @bep #6307
• hugolib: Fix broken bundle live reload logic 901077c0 @bep #6315#6308
• deps: Update github.com/bep/gitmap 24ad4295 @bep #6313
• Fix concat with fingerprint regression 3be2c253 @bep #6309
• tpl: Remove eq argument limitation 5e660947 @vazrupe #6237