Request to update the gnukhata-core new version

[Manas Kashyap]

Hola ,
I have updated the Gnukhata-core
<https://salsa.debian.org/python-team/modules/gnukhata-core#> version to
5.50 and it has passed lintian and sbuild and is ready to be uploaded.
I would request mentors to please look into this and test it and update as
needed.
Thank you so much
Manas Kashyap <http://manas-kashyap.github.io>