allow Predis 2.0, closes #1732

composer.json

@@ -30,7 +30,7 @@
         "phpspec/prophecy": "^1.15",
         "phpstan/phpstan": "^0.12.91",
         "phpunit/phpunit": "^8.5.14",
-        "predis/predis": "^1.1",
+        "predis/predis": "^1.1 || ^2.0",
         "rollbar/rollbar": "^1.3 || ^2 || ^3",
         "ruflin/elastica": "^7",
         "swiftmailer/swiftmailer": "^5.3|^6.0",