chore: symfony 7.3 update

Author: chr-hertel

composer.json

@@ -11,25 +11,25 @@
         "league/commonmark": "^2.7",
         "php-llm/llm-chain-bundle": "^0.20.2",
         "runtime/frankenphp-symfony": "^0.2.0",
-        "symfony/asset": "7.2.*",
-        "symfony/asset-mapper": "7.2.*",
-        "symfony/clock": "7.2.*",
-        "symfony/console": "7.2.*",
-        "symfony/css-selector": "7.2.*",
-        "symfony/dom-crawler": "7.2.*",
-        "symfony/dotenv": "7.2.*",
+        "symfony/asset": "7.3.*",
+        "symfony/asset-mapper": "7.3.*",
+        "symfony/clock": "7.3.*",
+        "symfony/console": "7.3.*",
+        "symfony/css-selector": "7.3.*",
+        "symfony/dom-crawler": "7.3.*",
+        "symfony/dotenv": "7.3.*",
         "symfony/flex": "^2.5",
-        "symfony/framework-bundle": "7.2.*",
-        "symfony/http-client": "7.2.*",
+        "symfony/framework-bundle": "7.3.*",
+        "symfony/http-client": "7.3.*",
         "symfony/monolog-bundle": "^3.10",
-        "symfony/runtime": "7.2.*",
-        "symfony/twig-bundle": "7.2.*",
-        "symfony/uid": "7.2.*",
+        "symfony/runtime": "7.3.*",
+        "symfony/twig-bundle": "7.3.*",
+        "symfony/uid": "7.3.*",
         "symfony/ux-icons": "^2.24",
         "symfony/ux-live-component": "^2.24",
         "symfony/ux-turbo": "^2.24",
         "symfony/ux-typed": "^2.24",
-        "symfony/yaml": "7.2.*",
+        "symfony/yaml": "7.3.*",
         "twig/extra-bundle": "^3.21",
         "twig/markdown-extra": "^3.21",
         "twig/twig": "^3.21"
@@ -55,10 +55,10 @@
         "php-cs-fixer/shim": "^3.75",
         "phpstan/phpstan": "^2.1",
         "phpunit/phpunit": "^11.5",
-        "symfony/browser-kit": "7.2.*",
-        "symfony/debug-bundle": "7.2.*",
-        "symfony/stopwatch": "7.2.*",
-        "symfony/web-profiler-bundle": "7.2.*"
+        "symfony/browser-kit": "7.3.*",
+        "symfony/debug-bundle": "7.3.*",
+        "symfony/stopwatch": "7.3.*",
+        "symfony/web-profiler-bundle": "7.3.*"
     },
     "config": {
         "allow-plugins": {
@@ -67,14 +67,14 @@
             "symfony/runtime": true
         },
         "platform": {
-            "php": "8.4.1"
+            "php": "8.4.7"
         },
         "sort-packages": true
     },
     "extra": {
         "symfony": {
             "allow-contrib": false,
-            "require": "7.2.*"
+            "require": "7.3.*"
         }
     },
     "autoload": {