CI: use stable branch for kdevelop related packages

This change has been requested by Ben Cooksley at
https://mail.kde.org/pipermail/umbrello-devel/2024-July/023580.html:

  2) You need to switch away for @same within .kde-ci.yml to the
     @stable tag instead.

Author: rhabacker

.kde-ci.yml

@@ -18,9 +18,9 @@ Dependencies:
     'frameworks/kwidgetsaddons': '@stable'
     'frameworks/kwindowsystem': '@stable'
     'frameworks/kxmlgui': '@stable'
-    #'kdevelop/kdevelop-pg-qt': '@stable'
-    #'kdevelop/kdevelop': '@same'
-    #'kdevelop/kdev-php': '@same'
+    'kdevelop/kdevelop-pg-qt': '@stable'
+    'kdevelop/kdevelop': '@stable'
+    'kdevelop/kdev-php': '@stable'
 
 
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