revert node 18 back to node 16 for the moment, re #4285

package-lock.json

@@ -139,7 +139,7 @@
                 "webpack-notifier": "^1.15.0"
             },
             "engines": {
-                "node": ">=18"
+                "node": ">=16"
             }
         },
         "node_modules/@aashutoshrathi/word-wrap": {

package.json

@@ -16,7 +16,7 @@
         "url": "https://develop.studip.de/svn/studip"
     },
     "engines": {
-        "node": ">=18"
+        "node": ">=16"
     },
     "devDependencies": {
         "@axe-core/playwright": "^4.6.1",