fix: open validate endpoint (#1162)

* fix: open validate endpoint

* fix: set validate permission to none

src/lib/routes/admin-api/feature.ts

@@ -8,6 +8,7 @@ import {
     UPDATE_FEATURE,
     DELETE_FEATURE,
     CREATE_FEATURE,
+    NONE,
 } from '../../types/permissions';
 import { IUnleashConfig } from '../../types/option';
 import { IUnleashServices } from '../../types/services';
@@ -44,7 +45,7 @@ class FeatureController extends Controller {
         this.get('/:featureName', this.getToggle);
         this.put('/:featureName', this.updateToggle, UPDATE_FEATURE);
         this.delete('/:featureName', this.archiveToggle, DELETE_FEATURE);
-        this.post('/validate', this.validate, UPDATE_FEATURE);
+        this.post('/validate', this.validate, NONE);
         this.post('/:featureName/toggle', this.toggle, UPDATE_FEATURE);
         this.post('/:featureName/toggle/on', this.toggleOn, UPDATE_FEATURE);
         this.post('/:featureName/toggle/off', this.toggleOff, UPDATE_FEATURE);