Install script fails if /etc/dbus-1 doesn't exist

When going through the local development steps, it has you run install-sessions.sh to add the newly-built DE to SDDM. However, this script fails to run if (as was the case on my machine) the folder /etc/dbus-1/ does not exist.

Please accept this simple patch to fix the issue. I would create a merge request myself but I don't have access 😄

diff --git a/login-sessions/install-sessions.sh.cmake b/login-sessions/install-sessions.sh.cmake
index 3041bd227..372ccd011 100755
--- a/login-sessions/install-sessions.sh.cmake
+++ b/login-sessions/install-sessions.sh.cmake
@@ -29,5 +29,6 @@ then
        <includedir>/opt/kde-dbus-scripts/interfaces/</includedir>
 </busconfig>
 EOF
+    sudo mkdir -p /etc/dbus-1/
     sudo mv session-local.conf /etc/dbus-1/
 fi
-- 
2.39.2

P.S, I tried to find the appropriate category in bugs.kde.org but I'm completely at a loss, so trying here first :)