Allow deprecation-contracts v3.0 (#397)

Author: jrushlow

composer.json

@@ -16,7 +16,7 @@
     "require": {
         "php": "^7.1 || ^8.0",
         "psr/container": "^1.0 || ^2.0",
-        "symfony/deprecation-contracts": "^2.2"
+        "symfony/deprecation-contracts": "^2.2 || ^3.0"
     },
     "require-dev": {
         "ext-intl": "*",