Change debug message when security is disabled (#138667) (#138718)

(cherry picked from commit a0b0a8b8e5)

Co-authored-by: Larry Gregory <larry.gregory@elastic.co>

x-pack/plugins/security/server/authentication/authentication_service.ts

@@ -118,7 +118,7 @@ export class AuthenticationService {
       // If security is disabled, then continue with no user credentials.
       if (!license.isEnabled()) {
         this.logger.debug(
-          'Current license does not support any security features, authentication is not needed.'
+          'Authentication is not required, as security features are disabled in Elasticsearch.'
         );
         return t.authenticated();
       }