re-enable flaky conditional actions test (#154167)

Fixes: 
#154133
#154131
#154130
#154129
#154128
#154127

The issue was fixed before it was skipped, with the below PR. Therefore
i just re-enable it.

#154138

x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/alerting/alerts.ts

@@ -33,12 +33,7 @@ export default function alertTests({ getService }: FtrProviderContext) {
   const esTestIndexTool = new ESTestIndexTool(es, retry);
   const taskManagerUtils = new TaskManagerUtils(es, retry);
 
-  // FLAKY: https://github.com/elastic/kibana/issues/154127
-  // FLAKY: https://github.com/elastic/kibana/issues/154128
-  // FLAKY: https://github.com/elastic/kibana/issues/154129
-  // FLAKY: https://github.com/elastic/kibana/issues/154130
-  // FLAKY: https://github.com/elastic/kibana/issues/154131
-  describe.skip('alerts', () => {
+  describe('alerts', () => {
     const authorizationIndex = '.kibana-test-authorization';
     const alertAsDataIndex = '.internal.alerts-observability.test.alerts.alerts-default-000001';
     const objectRemover = new ObjectRemover(supertest);