Merge branch '2.3' into 2.7

* 2.3:
  updated VERSION for 2.3.42
  update CONTRIBUTORS for 2.3.42
  updated CHANGELOG for 2.3.42
  Revert "bug #18908 [DependencyInjection] force enabling the external XML entity loaders (xabbuh)"
  Partial revert of previous PR
  [DependencyInjection] Skip deep reference check for 'service_container'
  Catch \Throwable
  [Serializer] Add missing @throws annotations
  Fix for #18843
  force enabling the external XML entity loaders
  Removed UTC specification with timestamp

Author: fabpot

DependencyInjection/ContainerAwareHttpKernel.php

@@ -71,6 +71,11 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
             $this->container->set('request', null, 'request');
             $this->container->leaveScope('request');
 
+            throw $e;
+        } catch (\Throwable $e) {
+            $this->container->set('request', null, 'request');
+            $this->container->leaveScope('request');
+
             throw $e;
         }