Bug#1095038: vte2.91: Update to 0.79.90

[Jeremy Bícha]

Source: vte2.91
Version: 0.78.3-3
Severity: wishlist
Control: block -1 by 1095037

vte 0.79/0.80 (part of GNOME 48) wants a newer version of fast-float
(see the blocking bug). This was discussed at
https://gitlab.gnome.org/GNOME/vte/-/issues/2823

There are a few different ways we could work around this but I'd
prefer if we could just update fast-float. fast-float only has one
other reverse build dependency: transmission. (It only provides C++
headers so there are no binary reverse dependencies.)

Thank you,
Jeremy Bícha