build: update base SHA for rebase on merge-pr script

Author: jasonaden

scripts/github/merge-pr

@@ -131,8 +131,8 @@ CHERRY_PICK_PR="git cherry-pick merge_pr_base..merge_pr"
 #
 # This check is used to enforce that we don't merge PRs that have not been rebased recently and could result in merging
 # of non-approved or otherwise bad changes.
-REQUIRED_BASE_SHA_MASTER="3fba6eff79a9b50909199eaa4ebf754c1c4adba6" # pullapprove => CODEOWNERS migration
-REQUIRED_BASE_SHA_PATCH="e3853e842ea5c10fafbc310a76a4a7f47ed8c65e"  # pullapprove => CODEOWNERS migration
+REQUIRED_BASE_SHA_MASTER="a03a9236f2aed5d00012d25f032aa43a046d91da" # pullapprove => CODEOWNERS migration
+REQUIRED_BASE_SHA_PATCH="a03a9236f2aed5d00012d25f032aa43a046d91da"  # pullapprove => CODEOWNERS migration
 if [[ $MERGE_MASTER == 1 ]]; then
   REQUIRED_BASE_SHA="$REQUIRED_BASE_SHA_MASTER"
 # check patch only if patch-only PR