[neon-notifications] Changes in repo-metadata

[Neon CI]

commit a37a4fe4d290189d9f9463a701c855db98cd6c5c
Author: David Faure <faure at kde.org>
Date:   Thu Nov 28 16:58:40 2024 +0100

    kdiff3 builds just fine, add it to the list

diff --git a/module-definitions/kf6-extragear.ksb b/module-definitions/kf6-extragear.ksb
index 945666d3..9c8f11f1 100644
--- a/module-definitions/kf6-extragear.ksb
+++ b/module-definitions/kf6-extragear.ksb
@@ -88,6 +88,7 @@ module-set extragear-sdk
       kcachegrind \
       kdesdk-kio \
       kdesdk-thumbnailers \
+      kdiff3 \
 
     ignore-modules \
       kdesvn \