Roll out 1.43.0 to 50%

Increase the 1.43.0 default rollout from 0% to 50% after initial release monitoring.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: craxal

version/version.json

@@ -43,7 +43,7 @@
       "updateGroups": [
         {
           "name": "default",
-          "percentage": 0
+          "percentage": 50
         }
       ],
       "cleanInstall": true,