Update DESCRIPTION file

[Maëlle Salmon]

@jonathanvoelkle @bedantaguru could you please update the DESCRIPTION file with the new authors including new maintainer? Thank you!

[Indranil Gayen]

I'll do it by this week after a discussion with @jonathanvoelkle

[Maëlle Salmon]

friendly reminder @jonathanvoelkle @bedantaguru 😸 (I see the open PR)