ci: fix image for store-stress-results-for-main

Summary

• ci: fix image for store-stress-results-for-main

---

• Close #...
• Cherry-pick to: none / 24.6
• Docs follow-up: not necessary / new issue
• Changelog is updated

.gitlab-ci.yml

@@ -661,7 +661,6 @@ store-stress-results-for-main:
   rules:
     - if: ($CI_COMMIT_BRANCH ==  $CI_DEFAULT_BRANCH) && ($CI_PIPELINE_SOURCE != "schedule")
   stage: stress-test
-  image: $BASE_IMAGE_NAME:$BASE_IMAGE_TAG
   script:
     - |
       tar -czvf sbroad-main-test-results.tgz -C sbroad/sbroad-cartridge/stress-test/ .