[BUGFIX] Fix namespace of RelationTest

Resolves: #58450
Releases: 6.2
Change-Id: I78d39b0be0d4fc9a425ff3fa1e2424ee017d3180
Reviewed-on: https://review.typo3.org/29798
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring

typo3/sysext/extbase/Tests/Functional/Persistence/RelationTest.php

 <?php
-namespace TYPO3\CMS\Extbase\Tests\Functional\Relations;
+namespace TYPO3\CMS\Extbase\Tests\Functional\Persistence;
 
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  *  Copyright notice