OEL-1291: Composer updated for starter content oel-1290.

composer.json

@@ -35,7 +35,7 @@
         "openeuropa/oe_content": "^2.8.0",
         "openeuropa/oe_corporate_blocks": "^4.4",
         "openeuropa/oe_multilingual": "^1.9",
-        "openeuropa/oe_starter_content": "1.x-dev",
+        "openeuropa/oe_starter_content": "dev-OEL-1290",
         "openeuropa/task-runner-drupal-project-symlink": "^1.0-beta5",
         "phpspec/prophecy-phpunit": "^1 || ^2"
     },