Merge pull request #390 from modmore/dependabot/composer/symfony/yaml-5.4.2

Bump symfony/yaml from 5.3.6 to 5.4.2

Author: muzzwood

composer.json

@@ -5,7 +5,7 @@
     "require": {
         "php": ">=7.2.5",
         "symfony/console": "5.3.*",
-        "symfony/yaml": "5.3.*",
+        "symfony/yaml": "5.4.*",
         "symfony/process": "5.3.*"
     },
     "autoload": {