Bump zalas/injector

Author: jakzal

composer.json

@@ -6,7 +6,7 @@
         "php": "^7.2,<8.0",
         "phpunit/phpunit": "^8.0",
         "psr/container": "^1.0",
-        "zalas/injector": "^1.2"
+        "zalas/injector": "^1.3"
     },
     "require-dev": {
         "symfony/config": "^3.4 || ^4.3",