casks: Correct Aurulent's cask name

[why]
History of the cask name:

It started as font-aurulentsansmono-nerd-font.rb, named by us (Nerd Font)
Homebrew/homebrew-cask-fonts@ecdf756

Then it has been dash-i-fied font-aurulent-sans-mono-nerd-font.rb
Homebrew/homebrew-cask-fonts@e8c2732

Then just one year ago the Nerd Font release CI got an overhaul and I
(personally) put in font-aurulent-nerd-font.rb, despite the fact that I
did look up all cask names and put them into a 'database' in our CI:

  c8cb5c7  casks: Hardcode cask names in fonts.json

[how]
Drop the wrong cask name (font-aurulent-nerd-font.rb) and use the more
correct and older one (casks: Hardcode cask names in fonts.json)

[note]
See also
Homebrew/homebrew-cask-fonts#8704

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

bin/scripts/lib/fonts.json

@@ -62,7 +62,7 @@
       "folderName": "AurulentSansMono",
       "imagePreviewFont": "AurulentSansM Nerd Font",
       "linkPreviewFont": "aurulent",
-      "caskName": "aurulent",
+      "caskName": "aurulent-sans-mono",
       "repoRelease": true,
       "description": "Sans serif, designed by Stephen G. Hartke which also created Verily Serif"
     },