fix: replace 'grey' with 'gray' in styleText call for Node.js compatibility

[julkusapiens]

I discoverd this bug while working with zotero-plugin-template after having upgraded to Node v25.7.0.

npm start crashed with the following error:

> zotero-plugin serve
node:util:209
      validateOneOf(key, 'format', ObjectKeys(inspect.colors));
      ^
TypeError [ERR_INVALID_ARG_VALUE]: The argument 'format' must be one of:  […] 'gray', […]. Received 'grey'
    at styleText (node:util:209:7)
    at Proxy.<anonymous> (file:///[…]/node_modules/zotero-plugin-scaffold/dist/shared/zotero-plugin-scaffold.qsx_2VJx.mjs:12:7)
    at file:///[…]/zotero-plugin-scaffold.qsx_2VJx.mjs:38:17
    at ModuleJob.run (node:internal/modules/esm/module_job:430:25)
    at async node:internal/modules/esm/loader:639:26
    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5) {
  code: 'ERR_INVALID_ARG_VALUE'
}

The fix is obviously to use "gray" instead of "grey", so yeah :)
pnpm run build went smoothly obviously.

[northword]

It's a bug in Node.js,

• util.styleText() does not accept format aliases on Node.js >= 25.7.0 nodejs/node#62177
• util: allow color aliases in styleText nodejs/node#62180.

But regardless, replacing this with gray won't be bad, thank you for your PR!

[pkg-pr-new]

npm i https://pkg.pr.new/zotero-plugin-scaffold@166

commit: cd191b2