Merge branch '6.4' into 7.2

* 6.4:
  Update the doc builder dependencies

Author: javiereguiluz

_build/composer.json

@@ -3,7 +3,7 @@
     "prefer-stable": true,
     "config": {
         "platform": {
-            "php": "8.1.0"
+            "php": "8.3"
         },
         "preferred-install": {
             "*": "dist"
@@ -14,9 +14,9 @@
         }
     },
     "require": {
-        "php": ">=8.1",
+        "php": ">=8.3",
         "symfony/console": "^6.2",
         "symfony/process": "^6.2",
-        "symfony-tools/docs-builder": "^0.21"
+        "symfony-tools/docs-builder": "^0.27"
     }
 }