Fix version constraint for ext-redis

Author: alexander-schranz

composer.json

@@ -5,7 +5,7 @@
     "license": "MIT",
     "require": {
         "php": "^7.1",
-        "ext-redis": "^4.2 || ^5.0",
+        "ext-redis": "^4.2 || ^5.0",
         "symfony/messenger": "4.3.*",
         "symfony/config": "^3.4 || ^4.0",
         "symfony/dependency-injection": "^3.4 || ^4.0",