Update octicon.js (#30767)

Co-authored-by: Peter Bengtsson <peterbe@github.com>

lib/liquid-tags/octicon.js

@@ -1,7 +1,7 @@
 import { TokenizationError } from 'liquidjs'
 import octicons from '@primer/octicons'
 
-const OptionsSyntax = /([a-zA-Z-]+)="([a-zA-Z0-9\d-_\s]+)"*/g
+const OptionsSyntax = /([a-zA-Z-]+)="([\w\s-]+)"*/g
 const Syntax = new RegExp('"(?<icon>[a-zA-Z-]+)"(?<options>(?:\\s' + OptionsSyntax.source + ')*)')
 const SyntaxHelp = 'Syntax Error in tag \'octicon\' - Valid syntax: octicon "<name>" <key="value">'