[Uptime] Unskip flaky api test (#142595) (#142613)

(cherry picked from commit b798f9f)

Co-authored-by: Shahzad <[email protected]>

x-pack/test/api_integration/apis/uptime/feature_controls.ts

@@ -145,8 +145,7 @@ export default function featureControlsTests({ getService }: FtrProviderContext)
       }
     });
 
-    // FLAKY: https://github.com/elastic/kibana/issues/136542
-    describe.skip('spaces', () => {
+    describe('spaces', () => {
       // the following tests create a user_1 which has uptime read access to space_1 and dashboard all access to space_2
       const space1Id = 'space_1';
       const space2Id = 'space_2';