Use kcc-UID2-6321-reenable-aks-e2e to checkout shared repo

Author: cYKatherine

.github/workflows/shared-run-e2e-tests.yaml

@@ -372,7 +372,7 @@ jobs:
       - name: Checkout uid2-shared-actions repo
         uses: actions/checkout@v4
         with:
-          ref: v3
+          ref: kcc-UID2-6321-reenable-aks-e2e
           repository: IABTechLab/uid2-shared-actions
           path: uid2-shared-actions