Allow v3 contracts where possible

Author: derrabus

composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": ">=7.2.5",
         "psr/container": "^1.1.1",
-        "symfony/deprecation-contracts": "^2.1",
+        "symfony/deprecation-contracts": "^2.1|^3",
         "symfony/polyfill-php80": "^1.16",
         "symfony/polyfill-php81": "^1.22",
         "symfony/service-contracts": "^1.1.6|^2"