[core]: fixed repo rebase script

Author: Kamell Perry

scripts/git/rebase-branches.sh

@@ -2,11 +2,9 @@ git checkout main
 git pull
 
 git checkout next-minor
-git pull
 git rebase main
 git push
 
 git checkout experimental
-git pull
-git rebase next-minor
+git rebase main
 git push