Hi!  This patch updates Mumble to 1.3.0.  It came about as a fix to
<https://issues.guix.gnu.org/issue/38054>, but I'm posting it here directly
since fixing that issue was just a byproduct of the version update.

Notes from the patch comment indicating other differences with the previous
package version:

> Besides the update in itself, bundled software components are enabled as
> long as they are not already implemented in an existing package (in which
> case the package is used instead).  Some comments were added to indicate why
> bundled software components are kept or removed, why features are disabled,
> and the reason to include each license.

Cheers!

-- 
Ivan Vilata i Balaguer -- https://elvil.net/