fix lowest allowed Workflow component version

Author: xabbuh

composer.json

@@ -108,7 +108,7 @@
         "symfony/validator": "<6.4",
         "symfony/web-profiler-bundle": "<6.4",
         "symfony/webhook": "<7.2",
-        "symfony/workflow": "<7.3"
+        "symfony/workflow": "<7.3.0-beta2"
     },
     "autoload": {
         "psr-4": { "Symfony\\Bundle\\FrameworkBundle\\": "" },