2022-06: a note on telegram X supporting reproducible builds

I'm kind of biased because I use that, so I was somewhat surprised by
the announcement.  Also I appreciated the "PS: Docker is not considered
an option, as it just hides away these tasks, and requires that all
published APKs must be built using it" note they have.  And the
announcement post title is a very nice "Open source done right"

Signed-off-by: Mattia Rizzolo <mattia@debian.org>