DEV: correct flaky test, insufficient timeout

In some cases with all the new mitigations the 10ms delay is no longer
enough. Wait up to 1 second here instead.

spec/components/scheduler/defer_spec.rb

@@ -85,7 +85,7 @@ describe Scheduler::Defer do
       x = 3
     end
 
-    wait_for(10) do
+    wait_for(1000) do
       x == 3
     end