Update Clerk

Updated Clerk entry with detailed free plan information.

README.md

@@ -618,7 +618,7 @@ This list results from Pull Requests, reviews, ideas, and work done by 1600+ peo
   * [Authress](https://authress.io/) — Authentication login and access control, unlimited identity providers for any project. Facebook, Google, Twitter and more. The first 1000 API calls are free.
   * [Authy](https://authy.com) - Two-factor authentication (2FA) on multiple devices, with backups. Drop-in replacement for Google Authenticator. Free for up to 100 successful authentications.
   * [Cerbos Hub](https://www.cerbos.dev/product-cerbos-hub) - A complete authorization management system for authoring, testing, and deploying access policies. Fine-grained authorization and access control, free up to 100 monthly active principals.
-  * [Clerk](https://clerk.com) — User management, authentication, 2FA/MFA, prebuilt UI components for sign-in, sign-up, user profiles, and more. Free up to 10,000 monthly active users.
+  * [Clerk](https://clerk.com) - User management, authentication, 2FA/MFA, prebuilt UI components for sign-in, sign-up, user profiles, and more. Free plan includes unlimited applications, 50,000 MRU limit per app, 3 dashboard seats, and more.
   * [Cloud-IAM](https://www.cloud-iam.com/) — Keycloak Identity and Access Management as a Service. Free up to 100 users and one realm.
   * [Descope](https://www.descope.com/) — Highly customizable AuthN flows, has both a no-code and API/SDK approach, Free 7,500 active users/month, 50 tenants (up to 5 SAML/SSO tenants).
   * [duo.com](https://duo.com/) — Two-factor authentication (2FA) for website or app. Free for ten users, all authentication methods, unlimited, integrations, hardware tokens.