[Composer] Moved league/flysystem-memory to require section

Author: alongosz

composer.json

@@ -48,6 +48,7 @@
         "doctrine/doctrine-bundle": "^2.0",
         "liip/imagine-bundle": "^2.3",
         "oneup/flysystem-bundle": "^4.4.2",
+        "league/flysystem-memory": "^2.0.6",
         "friendsofsymfony/http-cache-bundle": "^2.8",
         "sensio/framework-extra-bundle": "^6.1",
         "jms/translation-bundle": "^1.5",
@@ -63,7 +64,6 @@
         "behat/behat": "^3.6.1",
         "jenner/simple_fork": "^1.2",
         "friends-of-behat/mink-extension": "^2.4",
-        "league/flysystem-memory": "^2.0.6",
         "ibexa/ci-scripts": "^0.2@dev",
         "ibexa/code-style": "^1.0",
         "phpunit/phpunit": "^8.2",