AC-1545: Remove reference to dev* branches and beta versions in composer.json

Author: xmav

composer.json

@@ -64,7 +64,7 @@
         "magento/composer": "1.8.x-dev as 1.8.0",
         "magento/composer-dependency-version-audit-plugin": "~0.1",
         "magento/magento-composer-installer": ">=0.1.11",
-        "magento/zendframework1": "dev-master as 1.14.6",
+        "magento/zendframework1": "1.14.6-beta2 as 1.14.6",
         "monolog/monolog": "^2.3",
         "pelago/emogrifier": "^6.0.0",
         "php-amqplib/php-amqplib": "~3.1.0",