fix merge

Author: nicolas-grekas

composer.json

@@ -29,6 +29,7 @@
         "doctrine/collections": "~1.0",
         "symfony/validator": "^3.4.31|^4.3.4|^5.0",
         "symfony/dependency-injection": "^3.4|^4.0|^5.0",
+        "symfony/expression-language": "^3.4|^4.0|^5.0",
         "symfony/config": "^3.4|^4.0|^5.0",
         "symfony/console": "^4.3|^5.0",
         "symfony/http-foundation": "^3.4|^4.0|^5.0",