chore: Update discovery artifacts (#1407)

## Deleted keys were detected in the following pre-stable discovery artifacts:
analyticsadmin v1alpha https://github.com/googleapis/google-api-python-client/commit/3ed78879365ebef411b2748be8b5d52c047210eb

## Discovery Artifact Change Summary:
feat(analyticsadmin): update the api https://github.com/googleapis/google-api-python-client/commit/3ed78879365ebef411b2748be8b5d52c047210eb
feat(composer): update the api https://github.com/googleapis/google-api-python-client/commit/4862529435851dbb106efa0311c2b7515d2ad2ea
feat(genomics): update the api https://github.com/googleapis/google-api-python-client/commit/8a1c8a67e7e5b76581cfa95ffa14c01019c305af
feat(gkehub): update the api https://github.com/googleapis/google-api-python-client/commit/0fd49e0d39455077e39d850ac464635034d253b8
diff --git a/googleapiclient/discovery_cache/documents/workflowexecutions.v1.json b/googleapiclient/discovery_cache/documents/workflowexecutions.v1.json
index 95f825b..cf7233b 100644
--- a/googleapiclient/discovery_cache/documents/workflowexecutions.v1.json
+++ b/googleapiclient/discovery_cache/documents/workflowexecutions.v1.json
@@ -269,7 +269,7 @@
       }
     }
   },
-  "revision": "20210526",
+  "revision": "20210601",
   "rootUrl": "https://workflowexecutions.googleapis.com/",
   "schemas": {
     "CancelExecutionRequest": {