Update zend-servicemanger to ^3.4

Author: Xerkus

composer.json

@@ -26,17 +26,14 @@
         "zendframework/zend-expressive-helpers": "^5.0",
         "zendframework/zend-expressive-router": "^3.0",
         "zendframework/zend-expressive-template": "^2.0",
-        "zendframework/zend-servicemanager": "^2.7.8 || ^3.3",
+        "zendframework/zend-servicemanager": "^3.4",
         "zendframework/zend-view": "^2.11.1"
     },
     "require-dev": {
         "malukenho/docheader": "^0.1.5",
         "phpunit/phpunit": "^7.0.2",
         "zendframework/zend-coding-standard": "~1.0.0"
     },
-    "conflict": {
-        "container-interop/container-interop": "<1.2.0"
-    },
     "autoload": {
         "psr-4": {
             "Zend\\Expressive\\ZendView\\": "src/"