[RELEASE] Release of TYPO3 7.6.26

Change-Id: I2bef408cc019c014b3962fe963533d5ab4ebc55b
Reviewed-on: https://review.typo3.org/56423


Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>

typo3/sysext/core/Classes/Core/SystemEnvironmentBuilder.php

@@ -85,7 +85,7 @@ class SystemEnvironmentBuilder
     protected static function defineBaseConstants()
     {
         // This version, branch and copyright
-        define('TYPO3_version', '7.6.26-dev');
+        define('TYPO3_version', '7.6.26');
         define('TYPO3_branch', '7.6');
         define('TYPO3_copyright_year', '1998-2018');