bump debugbar library to 1.20 because of relevant core changes

composer.json

@@ -27,7 +27,7 @@
   "require": {
     "php": ">=7.3",
     "oxid-esales/oxideshop-ce": "^6.14",
-    "maximebf/debugbar": "^1.18",
+    "maximebf/debugbar": "^1.20",
     "ajgl/composer-symlinker": "^0.3.1",
     "cweagans/composer-patches": "^1.7.2"
   },