Skip flaky test

Author: vtm9

services/app/apps/codebattle/test/codebattle/tournament/upcoming_runner_test.exs

@@ -265,6 +265,8 @@ defmodule Codebattle.Tournament.UpcomingRunnerTest do
       assert {:ok, :noop} = UpcomingRunner.init(:noop)
     end
 
+    # skip flaky test
+    @tag :skip
     test "handle_info/2 with :run_upcoming processes tournaments and schedules next run" do
       # Clean up any existing tournaments from previous tests
       Repo.delete_all(Tournament)