aria-label

Hi, I was checking two files and I found they are SVG invalid because
of aria-label:

https://commons.wikimedia.org/wiki/File:Flag_of_Swedish_American_Mexico_Line.svg

https://commons.wikimedia.org/wiki/File:Coat_of_arms_of_the_Russian_Soviet_Federative_Socialist_Republic_(1920-1954).svg

The error is the same:

Attribute aria-label not allowed on SVG element g at this point

<g↩ aria-label="M"↩ id="text9720-0"↩
style="font-size:26.6667px;line-height:125%;font-family:'DejaVu
Sans';-inkscape-font-specificat…l';letter-spacing:0px;word-spacing:0px;display:inline;fill:none;stroke:#000000;stroke-width:0.25px">

Is there a way to save aria-label and make SVG valid?
Cheers and thanks in advance,
Carnby