Add support for symfony 7 (#213)

Co-authored-by: Patrik Mokrý <patrik.mokry@saxana.sk>

Author: MokryPatrik

composer.json

@@ -38,7 +38,7 @@
         "php": "^8.0",
         "ext-pcre": "*",
         "symfony/polyfill-mbstring": "^1.7",
-        "symfony/process": "^5.4 || ^6.0"
+        "symfony/process": "^5.4 || ^6.0 || ^7.0"
     },
     "require-dev": {
         "ext-fileinfo": "*",