fix: update regex for attribute parsing to improve accuracy

Author: rvirani1

src/diffDOM/virtual/fromString.ts

@@ -5,7 +5,7 @@ import { DiffDOMOptionsPartial, nodeType } from "../types"
 const tagRE =
     /<\s*\/*[a-zA-Z:_][a-zA-Z0-9:_\-.]*\s*(?:"[^"]*"['"]*|'[^']*'['"]*|[^'"/>])*\/*\s*>|<!--(?:.|\n|\r)*?-->/g
 
-const attrRE = /\s([^'"/\s><]+?)[\s/>]|([^\s=]+)=\s?(".*?"|'.*?')/g
+const attrRE = /\s([^'"/\s><]+?)[\s/>]|([^\s=]+)=\s?("[^"]*"|'[^']*')/g
 
 function unescape(string: string) {
     return string