Merge pull request php-vcr#311 from thecoderszone/symfony-5

Symfony 5 compatibility

Author: JeroenVanOort

composer.json

@@ -22,7 +22,7 @@
  "ext-curl": "*",
  "beberlei/assert": "^3.2.5",
  "symfony/yaml": "~2.1|^3.0|^4.0",
- "symfony/event-dispatcher": "^2.4|^3.0|^4.0"
+ "symfony/event-dispatcher": "^2.4|^3.0|^4.0|^5.0"
  },
 
  "require-dev": {