docs: add v6.0.0.beta.0 announcement to README (#723)

Author: kishore7snehil

Gemfile.lock

@@ -24,11 +24,11 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
-    addressable (2.8.9)
+    addressable (2.9.0)
       public_suffix (>= 2.0.2, < 8.0)
     ast (2.4.3)
     base64 (0.3.0)
-    bigdecimal (4.0.1)
+    bigdecimal (4.1.2)
     coderay (1.1.3)
     concurrent-ruby (1.3.6)
     connection_pool (3.0.2)
@@ -79,10 +79,7 @@ GEM
     i18n (1.14.8)
       concurrent-ruby (~> 1.0)
     io-console (0.8.2)
-    json (2.19.2)
-    json-schema (6.2.0)
-      addressable (~> 2.8)
-      bigdecimal (>= 3.1, < 5)
+    json (2.19.4)
     jwt (2.10.2)
       base64
     language_server-protocol (3.17.0.5)
@@ -93,8 +90,6 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     logger (1.7.0)
     lumberjack (1.4.2)
-    mcp (0.8.0)
-      json-schema (>= 4.1)
     method_source (1.1.0)
     mime-types (3.7.0)
       logger
@@ -108,8 +103,8 @@ GEM
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    parallel (1.27.0)
-    parser (3.3.10.2)
+    parallel (2.1.0)
+    parser (3.3.11.1)
       ast (~> 2.4.1)
       racc
     pp (0.6.3)
@@ -122,13 +117,13 @@ GEM
       reline (>= 0.6.0)
     public_suffix (7.0.5)
     racc (1.8.1)
-    rack (3.2.5)
+    rack (3.2.6)
     rainbow (3.1.1)
     rake (13.3.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    regexp_parser (2.11.3)
+    regexp_parser (2.12.0)
     reline (0.6.3)
       io-console (~> 0.5)
     rest-client (2.1.0)
@@ -151,12 +146,11 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.7)
-    rubocop (1.85.1)
+    rubocop (1.86.1)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
-      mcp (~> 0.6)
-      parallel (~> 1.10)
+      parallel (>= 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 2.9.3, < 3.0)
@@ -194,7 +188,7 @@ GEM
     unicode-emoji (4.2.0)
     uri (1.1.1)
     vcr (6.4.0)
-    webmock (3.26.1)
+    webmock (3.26.2)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)

README.md

@@ -13,6 +13,17 @@ Ruby API client for the [Auth0](https://auth0.com) platform.
 📚 <a href="#documentation">Documentation</a> - 🚀 <a href="#getting-started">Getting started</a> - 💻 <a href="#api-reference">API reference</a> - 💬 <a href="#feedback">Feedback</a>
 </div>
 
+> [!NOTE]
+> **[v6.0.0.beta.0](https://github.com/auth0/ruby-auth0/releases/tag/v6.0.0.beta.0) is now available!** This release features a completely rewritten Management API client, auto-generated from the Auth0 OpenAPI spec using [Fern](https://buildwithfern.com/), with strongly-typed responses, built-in pagination, and automatic token management.
+>
+> ```bash
+> gem install auth0 --pre
+> ```
+>
+> We'd love your feedback - please [open an issue](https://github.com/auth0/ruby-auth0/issues/new) if you encounter any problems.
+>
+> 📖 [Migration Guide](https://github.com/auth0/ruby-auth0/blob/v6/v6_MIGRATION_GUIDE.md) ・ [Changelog](https://github.com/auth0/ruby-auth0/blob/v6/CHANGELOG.md) ・ [API Reference](https://github.com/auth0/ruby-auth0/blob/v6/reference.md)
+
 ## Documentation
 
 - [API documentation](https://www.rubydoc.info/gems/auth0) - documentation auto-generated from the code comments that explains all the available features