[libshumate] po: Rename POTFILES to POTFILES.in

[Corentin Noël <corentinnoel src gnome org>]

commit c1652d9b11c5eb20d53945ae02f2268e8694509d
Author: Corentin Noël <corentin noel collabora com>
Date:   Sat May 14 10:29:17 2022 +0200

    po: Rename POTFILES to POTFILES.in
    
    This is required by Damned Lies.

 po/{POTFILES => POTFILES.in} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES b/po/POTFILES.in
similarity index 100%
rename from po/POTFILES
rename to po/POTFILES.in