replacing deprecated generateRandomHexString call

Classes/Service/ElectionInvitationService.php

@@ -20,6 +20,7 @@ use TYPO3\Election\Domain\Model\Configuration;
 use TYPO3\Election\Domain\Model\ElectionCircular;
 use TYPO3\Election\Domain\Model\ElectionInvitation;
 use TYPO3\Election\Domain\Model\Elector;
+use TYPO3\CMS\Core\Crypto\Random;
 
 /**
  * Class ElectionInvitationService
@@ -49,7 +50,7 @@ class ElectionInvitationService
             $electionInvitation = new ElectionInvitation();
             $electionInvitation->setElector($possibleReceiver);
             $electionInvitation->setElectionCircular($electionCircular);
-            $electionInvitation->setSecret(GeneralUtility::getRandomHexString(mt_rand(180, 220)));
+            $electionInvitation->setSecret(GeneralUtility::makeInstance(Random::class)->generateRandomHexString(mt_rand(180,220)));
             $this->electionInvitationRepository->add($electionInvitation);
             $this->electionInvitationRepository->persistAll();
             $electionInvitation->setSuccess($this->sendElectionInvitation($configuration, $electionInvitation));

Classes/Utility/MailUtility.php

@@ -22,6 +22,7 @@ use TYPO3\Election\Domain\Model\ElectionCircular;
 use TYPO3\Election\Domain\Model\ElectionInvitation;
 use TYPO3\Election\Domain\Model\Elector;
 use TYPO3\Election\Domain\Repository\ElectionInvitationRepository;
+use TYPO3\CMS\Core\Crypto\Random;
 
 /**
  * Class MailUtility
@@ -46,7 +47,7 @@ class MailUtility
         $electionInvitation = new ElectionInvitation();
         $electionInvitation->setElector($elector);
         $electionInvitation->setElectionCircular($electionCircular);
-        $electionInvitation->setSecret(GeneralUtility::getRandomHexString(mt_rand(180, 220)));
+        $electionInvitation->setSecret(GeneralUtility::makeInstance(Random::class)->generateRandomHexString(mt_rand(180,220)));
 
         $electionInvitationRepository = GeneralUtility::makeInstance(ObjectManager::class)->get(ElectionInvitationRepository::class);
         $electionInvitationRepository->add($electionInvitation);