TYPO3-Documentation#48 Upgrade Symfony to version 6.4.x, fix unit tests

.gitignore

@@ -2,6 +2,7 @@
 
 ###> symfony/framework-bundle ###
 .env
+.idea
 /public/bundles/
 /var/
 /vendor/

composer.json

@@ -9,29 +9,29 @@
         "ext-iconv": "*",
         "ext-json": "*",
         "cweagans/composer-patches": "^1.7",
-        "ruflin/elastica": "^7.1",
-        "symfony/asset": "^6.3",
-        "symfony/console": "^6.3",
-        "symfony/css-selector": "^6.3",
-        "symfony/dom-crawler": "^6.3",
-        "symfony/finder": "^6.3",
-        "symfony/flex": "^1.20",
-        "symfony/framework-bundle": "^6.3",
-        "symfony/monolog-bundle": "^3.8",
-        "symfony/stopwatch": "^6.3",
-        "symfony/twig-bundle": "^6.3",
-        "symfony/yaml": "^6.3"
+        "ruflin/elastica": "^7.3",
+        "symfony/asset": "^6.4",
+        "symfony/console": "^6.4",
+        "symfony/css-selector": "^6.4",
+        "symfony/dom-crawler": "^6.4",
+        "symfony/finder": "^6.4",
+        "symfony/flex": "^2.4",
+        "symfony/framework-bundle": "^6.4",
+        "symfony/monolog-bundle": "^3.10",
+        "symfony/stopwatch": "^6.4",
+        "symfony/twig-bundle": "^6.4",
+        "symfony/yaml": "^6.4"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^v3.19.2",
         "mikey179/vfsstream": "^1.6",
         "phpspec/prophecy": "^1.17",
         "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": "^9.6",
-        "symfony/browser-kit": "^6.3",
-        "symfony/dotenv": "^6.3",
-        "symfony/phpunit-bridge": "^6.3",
-        "symfony/web-profiler-bundle": "6.3.*"
+        "symfony/browser-kit": "^6.4",
+        "symfony/dotenv": "^6.4",
+        "symfony/phpunit-bridge": "^6.4",
+        "symfony/web-profiler-bundle": "6.4.*"
     },
     "config": {
         "preferred-install": {
@@ -78,7 +78,7 @@
         "symfony": {
             "id": "01C3GA9QV9DBZXQBG4MFTG7YCG",
             "allow-contrib": false,
-            "require": "6.3.*"
+            "require": "6.4.*"
         }
     }
 }