Merge branch '5.2' into 5.x

* 5.2:
  Fix enabled key for ratelimiter config
  Use more explicit variable name
  Fix wrong comment about SES region
  [Mailer] [Sendgrid] Use $scheme variable to stay consistent
  [Mailer] [Amazon] Fix @param annotation
  [Mailer] Rename testsuites
  Remove void return type from test methods
  Remove void return type from test methods
  [Notifier] Remove void return type from test methods
  [Notifier][Telegram] Remove void return type from test methods
  [Notifier][Esendex] Remove void return type from test methods
  [Notifier][Sendinblue] Remove void return type from test methods
  [Notifier][GoogleChat] Remove void return type from test methods
  [Notifier] Move ext-json below php requirement to stay consistent

Author: derrabus

DependencyInjection/Configuration.php

@@ -1833,7 +1833,7 @@ private function addRateLimiterSection(ArrayNodeDefinition $rootNode)
                         ->ifTrue(function ($v) { return \is_array($v) && !isset($v['limiters']) && !isset($v['limiter']); })
                         ->then(function (array $v) {
                             $newV = [
-                                'enabled' => $v['enabled'],
+                                'enabled' => $v['enabled'] ?? true,
                             ];
                             unset($v['enabled']);
 

Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -1590,7 +1590,7 @@ public function provideMailer(): array
     /**
      * @dataProvider provideMailer
      */
-    public function testMailer(string $configFile, array $expectedTransports): void
+    public function testMailer(string $configFile, array $expectedTransports)
     {
         $container = $this->createContainerFromFile($configFile);
 
@@ -1611,14 +1611,14 @@ public function testMailer(string $configFile, array $expectedTransports): void
         $this->assertCount(3, $h->getMethodCalls());
     }
 
-    public function testMailerWithDisabledMessageBus(): void
+    public function testMailerWithDisabledMessageBus()
     {
         $container = $this->createContainerFromFile('mailer_with_disabled_message_bus');
 
         $this->assertNull($container->getDefinition('mailer.mailer')->getArgument(1));
     }
 
-    public function testMailerWithSpecificMessageBus(): void
+    public function testMailerWithSpecificMessageBus()
     {
         $container = $this->createContainerFromFile('mailer_with_specific_message_bus');