Move API fuzzing download button in Pipeline page - Part 1 - Refactor Query fragment
Parent Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/333660
* [x] Refactor https://gitlab.com/gitlab-org/gitlab/-/blob/v14.0.0-ee/app/assets/javascripts/vue_shared/security_reports/queries/security_report_pipeline_download_paths.query.graphql into a query fragment.
* [x] Update existing usages of query to use query fragment. Used Here: `ee/app/assets/javascripts/vue_shared/security_reports/components/artifact_downloads/pipeline_artifact_download.vue`
* [x] Update unit tests
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