Upgrade DOMPurify library

[xjiang-at-wiris]

Description

Upgrade DOMPurify library to avoid deletion of some MathML tags by error.

Steps to reproduce

Edit this MathML in e.g. CKEditor5:

<math xmlns="http://www.w3.org/1998/Math/MathML">
 <mmultiscripts>
   <msubsup>
     <mi>c</mi>
     <mi>h</mi>
     <mi>h</mi>
   </msubsup>
   <mprescripts/>
   <mi>h</mi>
   <mi>h</mi>
 </mmultiscripts>
</math>

Then check mmultiscripts tag is not be deleted

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#taskid 44328