[LyX/master] Update it.po

[Enrico Forestieri]

commit 64f001e6cd58f8bbcfa5fec30009c4bb0e0df898
Author: Enrico Forestieri <forenr at lyx.org>
Date:   Wed Sep 30 22:16:07 2020 +0200

    Update it.po

 po/it.gmo |  Bin 597108 -> 597571 bytes
 po/it.po  | 4476 ++++++++++++++++++++++++++++++-------------------------------
 2 files changed, 2228 insertions(+), 2248 deletions(-)