chore: Update Kirby

composer.json

@@ -4,9 +4,12 @@
     "homepage": "https://lukasbestle.com",
     "require": {
         "php": ">=7.1.0",
-        "getkirby/cms": "^3.0"
+        "getkirby/cms": "^5.0"
     },
     "config": {
-        "optimize-autoloader": true
+        "optimize-autoloader": true,
+        "allow-plugins": {
+            "getkirby/composer-installer": true
+        }
     }
 }