fix: get_artifact_from_index now uses artifact_path instead of index_path(bug 1999039)#874

jcristau merged 2 commits intotaskcluster:maintaskcluster/taskgraph:mainfrom

abhishekmadan30:fixing-find-task-id-batchabhishekmadan30/taskgraph:fixing-find-task-id-batchCopy head branch name to clipboard