[FEATURE] raise php-vcr to mininum 1.5

Author: Simon Huebner

composer.json

@@ -11,7 +11,7 @@
     ],
     "require": {
         "symfony/framework-bundle": "~2.6||~3.0||~4.0",
-        "php-vcr/php-vcr": "~1.2"
+        "php-vcr/php-vcr": "^1.5"
     },
     "autoload": {
         "psr-4": {