replaced deprecated addWarning method with addWarningMessage method in Security module

Author: kishorekumarkesavan

app/code/Magento/Security/Model/Plugin/Auth.php

@@ -43,7 +43,7 @@ public function afterLogin(\Magento\Backend\Model\Auth $authModel)
     {
         $this->sessionsManager->processLogin();
         if ($this->sessionsManager->getCurrentSession()->isOtherSessionsTerminated()) {
-            $this->messageManager->addWarning(__('All other open sessions for this account were terminated.'));
+            $this->messageManager->addWarningMessage(__('All other open sessions for this account were terminated.'));
         }
     }
 

app/code/Magento/Security/Test/Unit/Model/Plugin/AuthTest.php

@@ -64,7 +64,7 @@ protected function setUp(): void
 
         $this->messageManager = $this->getMockForAbstractClass(
             ManagerInterface::class,
-            ['addWarning'],
+            ['addWarningMessage'],
             '',
             false
         );
@@ -100,7 +100,7 @@ public function testAfterLogin()
             ->method('isOtherSessionsTerminated')
             ->willReturn(true);
         $this->messageManager->expects($this->once())
-            ->method('addWarning')
+            ->method('addWarningMessage')
             ->with($warningMessage);
 
         $this->model->afterLogin($this->authMock);