[firebase/auth] Property 'updateProject' doesn't exist on type 'ProjectConfigManager'

Based on [the reCAPTCHA SMS toll fraud protection google article](https://cloud.google.com/identity-platform/docs/recaptcha-tfp) I should be able to call updateProject on a ProjectConfigManager.

I found no trace of this updateProject method, I checked the [ProjectConfigManager reference](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.projectconfigmanager) too, no such method. I also tried the method [updateProjectConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.projectconfigmanager#projectconfigmanagerupdateprojectconfig) but the [updateProjectConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.projectconfigmanager#projectconfigmanagerupdateprojectconfig) does take an instance of a [UpdateProjectConfigRequest](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequest_interface), so the properties of that interface are [emailPrivacyConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequestemailprivacyconfig), [multiFactorConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequestmultifactorconfig), [passwordPolicyConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequestpasswordpolicyconfig), [recaptchaConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequestrecaptchaconfig) and [smsRegionConfig](https://firebase.google.com/docs/reference/admin/node/firebase-admin.auth.updateprojectconfigrequest.md#updateprojectconfigrequestsmsregionconfig), thus they differ completely from phoneEnforcementState, useSmsTollFraudProtection and tollFraudManagedRules needed by the hypothetical updateProject provided in the adminSdk snippet at [toll fraud protection docs](https://cloud.google.com/identity-platform/docs/recaptcha-tfp)

Here is the code snippet for the admin sdk provided on the google article:

```
// Update the reCAPTCHA config to enable toll fraud protection
const updateProjectConfigRequest = {
recaptchaConfig: {
phoneEnforcementState: 'ENFORCE_MODE',
useSmsTollFraudProtection: 'true',
tollFraudManagedRules: [{ startScore: START_SCORE,
action: 'BLOCK' }],
}
}
let projectConfig = await getAuth().projectConfigManager().updateProject(updateProjectConfigRequest);
```

まず、ProjectConfigManager.updateProjectConfig と UpdateProjectConfigRequest を、料金詐欺対策用の Google reCAPTCHA スニペットと比較します。ProjectConfigManager と recaptchaConfig のエントリーポイントをたどり、updateProject が存在しないのか、それとも外部ドキュメントが古くなっているのかを判断します。SDK の動作とドキュメントが、サポートされるリクエスト形式について一致すれば完了です。

索引モデルが issue の本文から書いたものです。