Ensure alpha branch dependencies in composer.json

Author: ShopsysBot

composer.json

@@ -28,10 +28,10 @@
         "doctrine/doctrine-bundle": "^2.5.7",
         "doctrine/orm": "^2.11.2",
         "doctrine/persistence": "^3.3.3",
-        "shopsys/form-types-bundle": "16.0.x-dev",
-        "shopsys/framework": "16.0.x-dev",
-        "shopsys/migrations": "16.0.x-dev",
-        "shopsys/plugin-interface": "16.0.x-dev",
+        "shopsys/form-types-bundle": "dev-alpha as 16.0.x-dev",
+        "shopsys/framework": "dev-alpha as 16.0.x-dev",
+        "shopsys/migrations": "dev-alpha as 16.0.x-dev",
+        "shopsys/plugin-interface": "dev-alpha as 16.0.x-dev",
         "symfony/config": "^5.4",
         "symfony/dependency-injection": "^5.4",
         "symfony/form": "^5.4",