[TASK] Raise version number of compatibility6 in update wizard

Resolves: #78371
Releases: master,7.6
Change-Id: Iaa4c6065bdf3beb0ce226733e89d14485efa0fea
Reviewed-on: https://review.typo3.org/50308


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>

typo3/sysext/install/Classes/Updates/Compatibility6ExtractionUpdate.php

@@ -38,7 +38,7 @@ class Compatibility6ExtractionUpdate extends AbstractDownloadExtensionUpdate
         'compatibility6' => [
             'title' => 'Compatibility Mode for TYPO3 CMS 6.x',
             'description' => 'Provides an additional backwards-compatibility layer with legacy functionality for sites that haven\'t fully migrated to TYPO3 CMS 7 yet.',
-            'versionString' => '7.6.0',
+            'versionString' => '7.6.4',
         ]
     ];