Use v2.7 tag for shared action to run e2e tests (#312)

Author: cYKatherine

.github/workflows/run-e2e-tests-on-operator.yaml

@@ -72,7 +72,7 @@ on:
 jobs:
   e2e-test:
     name: E2E Test
-    uses: IABTechLab/uid2-shared-actions/.github/workflows/shared-run-e2e-tests.yaml@main
+    uses: IABTechLab/uid2-shared-actions/.github/workflows/shared-run-e2e-tests.yaml@v2.7
     with:
       operator_image_version: ${{ inputs.operator_image_version }}
       core_image_version: ${{ inputs.core_image_version }}