chore(deps): update toolkit

Author: windingwind

package-lock.json

@@ -32,7 +32,7 @@
     "franc": "^6.2.0",
     "iso639-js": "^1.1.3",
     "jsencrypt": "^3.3.2",
-    "zotero-plugin-toolkit": "^5.1.0-1"
+    "zotero-plugin-toolkit": "^5.1.0-beta.4"
   },
   "devDependencies": {
     "@eslint/js": "^9.30.1",