MC-14915: Update Symfony libs

Author: roettigl

composer.json

@@ -47,9 +47,9 @@
         "phpseclib/mcrypt_compat": "1.0.8",
         "phpseclib/phpseclib": "2.0.*",
         "ramsey/uuid": "~3.8.0",
-        "symfony/console": "~4.1.0",
-        "symfony/event-dispatcher": "~4.1.0",
-        "symfony/process": "~4.1.0",
+        "symfony/console": "~4.1.0|~4.2.0|~4.3.0",
+        "symfony/event-dispatcher": "~4.1.0|~4.2.0|~4.3.0",
+        "symfony/process": "~4.1.0|~4.2.0|~4.3.0",
         "tedivm/jshrink": "~1.3.0",
         "tubalmartin/cssmin": "4.1.1",
         "webonyx/graphql-php": "^0.12.6",