clibor: update livecheck

The existing `livecheck` block for `clibor` currently returns an
`Unable to get versions` error. The regex aims to match text like
"Clibor.dmg - v1.3" but the dash has been replaced by an `–`
HTML entity. This addresses the issue by updating the regex to match
either a literal dash (en, em, or hyphen) or an HTML entity.

Casks/c/clibor.rb

@@ -15,7 +15,7 @@ cask "clibor" do
 
   livecheck do
     url "https://chigusa-web.com/clibor-for-mac-en/download/"
-    regex(/Clibor\.dmg\s–\sv?(\d+(?:\.\d+)+)/i)
+    regex(/Clibor\.dmg\s*(?:[–—-]|&[a-z]+;)?\s*v?(\d+(?:\.\d+)+)/i)
   end
 
   auto_updates true