update deps

composer.json

@@ -36,7 +36,7 @@
         }
     },
     "require": {
-        "php": "^7.3",
+        "php": ">=7.3",
         "ext-ctype": "*",
         "ext-iconv": "*",
         "ext-json": "*",
@@ -49,15 +49,15 @@
         "react/promise-timer": "^1.5",
         "react/socket": "^1.2",
         "react/stream": "^1.1",
-        "symfony/console": "^4.4",
-        "symfony/event-dispatcher": "^4.4",
-        "symfony/framework-bundle": "^4.4",
-        "symfony/yaml": "^4.4"
+        "symfony/console": "^4|^5",
+        "symfony/event-dispatcher": "^4|^5",
+        "symfony/framework-bundle": "^4|^5",
+        "symfony/yaml": "^4|^5"
     },
     "require-dev": {
         "phpstan/phpstan": "^0.11.2",
         "phpstan/phpstan-symfony": "^0.11.1",
-        "symfony/phpunit-bridge": "^4.4",
+        "symfony/phpunit-bridge": "^4|^5",
         "symplify/easy-coding-standard": "^5.4",
         "phpunit/phpunit": "^8.0"
     },