adding Bertha Foundation to Sponsors page
Please update the sponsors page https://www.torproject.org/about/sponsors/ to have a new entry for Bertha Foundation. I have made these changes and would like for someone to make the changes live.
Here's the link https://gitlab.torproject.org/bekeela/tpo/-/blob/master/content/about/sponsors/Bertha/.gitkeep
commit: 0ed09c32
Thank you!