Use phpbenchmarks/symfony-common 4.1.1

Author: steevanb

composer.json

@@ -7,9 +7,8 @@
         "symfony/console": "4.0.*",
         "symfony/flex": "^1.0",
         "symfony/framework-bundle": "4.0.*",
-        "symfony/lts": "^4@dev",
         "symfony/yaml": "4.0.*",
-        "phpbenchmarks/symfony-common": "4.1.0"
+        "phpbenchmarks/symfony-common": "4.1.1"
     },
     "config": {
         "preferred-install": {
@@ -25,6 +24,7 @@
     "conflict": {
         "symfony/symfony": "*",
         "https://github.com/composer/composer/issues/7827": "0.0.0",
+        "https://github.com/symfony/symfony/issues/29581": "0.0.0",
         "symfony/routing": ">=4.1.0",
         "symfony/http-foundation": ">=4.1.0",
         "symfony/event-dispatcher": ">=4.1.0",