Upgrade Sonata admin packages

Author: Martin de Keijzer

composer.json

@@ -12,8 +12,8 @@
     "require": {
         "php": ">=7.2",
         "ext-fileinfo": "*",
-        "sonata-project/admin-bundle": "~3.76.0",
-        "sonata-project/doctrine-orm-admin-bundle": "^3.21",
+        "sonata-project/admin-bundle": "^3.78",
+        "sonata-project/doctrine-orm-admin-bundle": "^3.24.0",
         "martin1982/live-broadcast-bundle": "^4.0",
         "symfony/framework-bundle": "^4.4|^5.0"
     },