Update npm and node engines versions

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Author: nextcloud-bot

package.json

@@ -149,8 +149,8 @@
     "extends @nextcloud/browserslist-config"
   ],
   "engines": {
-    "node": "^14.0.0",
-    "npm": "^7.0.0"
+    "node": "^16.0.0",
+    "npm": "^7.0.0 || ^8.0.0"
   },
   "overrides": {
     "colors": "1.4.0"