[Contracts] add return types and bump to v3

Author: nicolas-grekas

composer.json

@@ -19,7 +19,7 @@
         "php": ">=8.0.2",
         "symfony/error-handler": "^5.4|^6.0",
         "symfony/event-dispatcher": "^5.4|^6.0",
-        "symfony/http-client-contracts": "^1.1|^2",
+        "symfony/http-client-contracts": "^1.1|^2.0|^3.0",
         "symfony/http-foundation": "^5.4|^6.0",
         "symfony/polyfill-ctype": "^1.8",
         "psr/log": "~1.0"
@@ -37,7 +37,7 @@
         "symfony/routing": "^5.4|^6.0",
         "symfony/stopwatch": "^5.4|^6.0",
         "symfony/translation": "^5.4|^6.0",
-        "symfony/translation-contracts": "^1.1|^2",
+        "symfony/translation-contracts": "^1.1|^2.0|^3.0",
         "psr/cache": "^1.0|^2.0|^3.0",
         "twig/twig": "^2.13|^3.0.4"
     },