Merge pull request #169 from php-api-clients/renovate/major-symfony

Update dependency symfony/yaml to v6

Author: WyriHaximus

composer.json

@@ -29,7 +29,7 @@
         "react/http": "^1.8",
         "reactivex/rxphp": "^2.0",
         "ringcentral/psr7": "^1.3",
-        "symfony/yaml": "^5.4",
+        "symfony/yaml": "^6.0",
         "twig/twig": "^3.5",
         "wyrihaximus/async-test-utilities": "^6.1",
         "wyrihaximus/composer-update-bin-autoload-path": "^1",