[LyX/master] Update ja.po from Koji & remerge

[Pavel Sanda]

commit ecd5751ece7aed1147aaae22d0ce5ae6ea32fc4c
Author: Pavel Sanda <sanda at lyx.org>
Date:   Fri Feb 24 19:38:19 2023 +0100

    Update ja.po from Koji & remerge

 po/ja.po |  783 +++++++++++++++++++++++++++++++++-----------------------------
 1 files changed, 413 insertions(+), 370 deletions(-)