kio_info: fix the extraction of the POT file

info/Messages.sh

 #! /usr/bin/env bash
 # SPDX-License-Identifier: MIT
 
-$XGETTEXT *.cc -o $podir/kio5_info.pot
+$XGETTEXT *.cpp -o $podir/kio5_info.pot

[Friedrich W. H. Kossebau]

Ah, was not on my radar, thanks for fixing.