bug#62415: Bump %webkit-version

[André A . Gomes]

Hi Guix,

Web browsers relying on webkitgtk version 2.38.5 (such as Nyxt, Epiphany
or Surf) suffer from serious bugs when using this concrete webkitgtk
version.  For instance, accessing github.com results in a blank page.

I'd suggest either downgrading to 2.38.4 or bumping to 2.40.0.  Notice
that the latter is the most up-to-date stable release, see

https://webkitgtk.org/2023/03/17/webkitgtk2.40.0-released.html


My machine is not very powerful and I'm not sure whether it'll handle a
local build so that I can make the necessary checks and send a patch.

Could someone please help?  Thanks.


-- 
André A. Gomes
"You cannot even find the ruins..."