Merge branch '2.8' into 3.3

* 2.8:
  [Intl] Update ICU data to 60.1
  [Validator] Fix Costa Rica IBAN format
  [Bridge/ProxyManager] Remove direct reference to value holder property
  [Validator] Add Belarus IBAN format
  [FrameworkBundle] Specifically inject the debug dispatcher in the collector
  update the pull request template
  [Stopwatch] minor fix

Author: fabpot

Resources/config/collectors.xml

@@ -27,7 +27,7 @@
 
         <service id="data_collector.events" class="Symfony\Component\HttpKernel\DataCollector\EventDataCollector">
             <tag name="data_collector" template="@WebProfiler/Collector/events.html.twig" id="events" priority="290" />
-            <argument type="service" id="event_dispatcher" on-invalid="ignore" />
+            <argument type="service" id="debug.event_dispatcher" on-invalid="ignore" />
         </service>
 
         <service id="data_collector.logger" class="Symfony\Component\HttpKernel\DataCollector\LoggerDataCollector">