[LyX/master] Update fr.po

[jpc]

commit cf0494bd3f0167f0cdce0f8cb32b0fa33cea6db0
Author: jpc <jpc at lyx.org>
Date:   Tue Oct 19 11:43:14 2021 +0200

                   Update fr.po

 po/fr.gmo |  Bin 623117 -> 624993 bytes
 po/fr.po  | 1456 ++++++++++++++++++++++++++++++++-----------------------------
 2 files changed, 761 insertions(+), 695 deletions(-)