WIP: Allow installation on TYPO3 v13

Ratchet - the websocket server implementation use for LiveReload - is
not yet compatible with TYPO3's dependencies (i.e. Symfony)
See ratchetphp/Ratchet#1054

Author: cundd

Diff for: composer.json

@@ -20,7 +20,7 @@
   "require": {
     "php": "^8.1",
     "ext-ctype": "*",
-    "typo3/cms-core": "^12.4.6",
+    "typo3/cms-core": "^12.4.6 || ^13.4.0",
     "cundd/assetic_additions": "^2.0.0",
     "assetic/framework": "^3.1.2"
   },