temporally use old staging repo

Author: xinsong-cui

.github/workflows/sync-mirror.yml

@@ -18,5 +18,5 @@ jobs:
         with:
           source_repo: "https://aws-sdk-kotlin-ci:${{ secrets.CI_USER_PAT }}@github.com/aws/aws-sdk-kotlin.git"
           source_branch: "main"
-          destination_repo: "https://aws-sdk-kotlin-ci:${{ secrets.CI_USER_PAT }}@github.com/aws/private-aws-sdk-kotlin-staging.git"
+          destination_repo: "https://aws-sdk-kotlin-ci:${{ secrets.CI_USER_PAT }}@github.com/awslabs/private-aws-sdk-kotlin-staging.git"
           destination_branch: "main"