fix(Description): Bump symfony/yaml requirement to >=3.4.0 (#3301411)

composer.json

@@ -20,7 +20,7 @@
         "sirbrillig/phpcs-variable-analysis": "^2.10",
         "slevomat/coding-standard": "^7.0 || ^8.0",
         "squizlabs/php_codesniffer": "^3.7.1",
-        "symfony/yaml": ">=2.0.5"
+        "symfony/yaml": ">=3.4.0"
     },
     "autoload": {
         "psr-4": {