Remove postUpgradeTasks from renovate

Author: tobio

.buildkite/update-kibana-client.yml

@@ -6,4 +6,5 @@ steps:
   - label: Regenerate Kibana client and build provider
     command:
       - "make -C generated/kbapi all"
-      - "make build"
+      - "make build"
+      - "make test"

renovate.json

@@ -14,10 +14,6 @@
       "datasourceTemplate": "git-refs"
     }
   ],
-  "postUpgradeTasks": {
-    "commands": ["make -C generated/kbapi all"],
-    "fileFilters": ["generated/kbapi/Makefile"]
-  },
   "automerge": true,
   "automergeStrategy": "squash",
   "automergeType": "branch",