revert blossom-ci change

Signed-off-by: Yun Liu <[email protected]>

Author: KumoLiu

.github/workflows/blossom-ci.yml

@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
         with:
           repository: ${{ fromJson(needs.Authorization.outputs.args).repo }}
           ref: ${{ fromJson(needs.Authorization.outputs.args).ref }}