chore: add Symfony 8 to list of supported versions (#338)

Author: KDederichs

composer.json

@@ -119,8 +119,8 @@
         "ext-mbstring": "*",
         "ext-soap": "*",
         "composer/composer": "^2.0",
-        "symfony/console": "^4.0|^5.0|^6.0|^7.0",
-        "symfony/yaml": "^4.0|^5.0|^6.0|^7.0",
+        "symfony/console": "^4.0|^5.0|^6.0|^7.0|^8.0",
+        "symfony/yaml": "^4.0|^5.0|^6.0|^7.0|^8.0",
         "wsdltophp/packagebase": "^5.0",
         "wsdltophp/phpgenerator": "^4.0",
         "wsdltophp/wsdlhandler": "^1.0"