Update the rebranch scheme to include "stable/20221013"

Author: shahmishal

utils/update_checkout/update-checkout-config.json

@@ -129,7 +129,7 @@
             }
         },
         "rebranch": {
-            "aliases": ["rebranch"],
+            "aliases": ["rebranch", "stable/20221013"],
             "repos": {
                 "llvm-project": "stable/20221013",
                 "swift-llvm-bindings": "stable/20221013",