Issue #3392616 by Spokje, longwave: Update to Symfony 6.4

Author: lauriii

composer.json

@@ -31,34 +31,34 @@
         "psr/log": "~3.0.0",
         "ralouphie/getallheaders": "~3.0.3",
         "sebastian/diff": "~4.0.5",
-        "symfony/console": "~v6.3.0",
-        "symfony/dependency-injection": "~v6.3.0",
+        "symfony/console": "~v6.4.0-BETA1",
+        "symfony/dependency-injection": "~v6.4.0-BETA1",
         "symfony/deprecation-contracts": "~v3.3.0",
-        "symfony/error-handler": "~v6.3.0",
-        "symfony/event-dispatcher": "~v6.3.0",
+        "symfony/error-handler": "~v6.4.0-BETA1",
+        "symfony/event-dispatcher": "~v6.4.0-BETA1",
         "symfony/event-dispatcher-contracts": "~v3.3.0",
-        "symfony/http-foundation": "~v6.3.0",
-        "symfony/http-kernel": "~v6.3.0",
-        "symfony/mailer": "~v6.3.5",
-        "symfony/mime": "~v6.3.0",
-        "symfony/polyfill-ctype": "~v1.27.0",
-        "symfony/polyfill-iconv": "~v1.27.0",
-        "symfony/polyfill-intl-grapheme": "~v1.27.0",
-        "symfony/polyfill-intl-idn": "~v1.27.0",
-        "symfony/polyfill-intl-normalizer": "~v1.27.0",
-        "symfony/polyfill-mbstring": "~v1.27.0",
-        "symfony/polyfill-php83": "~v1.27.0",
-        "symfony/process": "~v6.3.0",
-        "symfony/psr-http-message-bridge": "~v2.2.0",
-        "symfony/routing": "~v6.3.0",
-        "symfony/serializer": "~v6.3.0",
+        "symfony/http-foundation": "~v6.4.0-BETA1",
+        "symfony/http-kernel": "~v6.4.0-BETA1",
+        "symfony/mailer": "~v6.4.0-BETA1",
+        "symfony/mime": "~v6.4.0-BETA1",
+        "symfony/polyfill-ctype": "~v1.28.0",
+        "symfony/polyfill-iconv": "~v1.28.0",
+        "symfony/polyfill-intl-grapheme": "~v1.28.0",
+        "symfony/polyfill-intl-idn": "~v1.28.0",
+        "symfony/polyfill-intl-normalizer": "~v1.28.0",
+        "symfony/polyfill-mbstring": "~v1.28.0",
+        "symfony/polyfill-php83": "~v1.28.0",
+        "symfony/process": "~v6.4.0-BETA1",
+        "symfony/psr-http-message-bridge": "~v2.3.1",
+        "symfony/routing": "~v6.4.0-BETA1",
+        "symfony/serializer": "~v6.4.0-BETA1",
         "symfony/service-contracts": "~v3.3.0",
-        "symfony/string": "~v6.3.0",
+        "symfony/string": "~v6.3.5",
         "symfony/translation-contracts": "~v3.3.0",
-        "symfony/validator": "~v6.3.0",
-        "symfony/var-dumper": "~v6.3.0",
-        "symfony/var-exporter": "~v6.3.0",
-        "symfony/yaml": "~v6.3.0",
+        "symfony/validator": "~v6.4.0-BETA1",
+        "symfony/var-dumper": "~v6.4.0-BETA1",
+        "symfony/var-exporter": "~v6.3.6",
+        "symfony/yaml": "~v6.4.0-BETA1",
         "twig/twig": "~v3.6.0"
     }
 }