Added 3.5.21 release announcement

Author: deivid-rodriguez

_posts/2024-10-03-3.5.21-released.md

@@ -0,0 +1,53 @@
+---
+title: 3.5.21 Released
+layout: post
+author: David Rodríguez
+author_email: deivid.rodriguez@riseup.net
+---
+
+RubyGems 3.5.21 includes enhancements and bug fixes.
+
+To update to the latest RubyGems you can run:
+
+    gem update --system
+
+To install RubyGems by hand see the [Download RubyGems][download] page.
+
+
+_## Enhancements:_
+
+* Fix `Gem::MissingSpecVersionError#to_s` not showing exception message.
+  Pull request [#8074](https://github.com/rubygems/rubygems/pull/8074) by
+  deivid-rodriguez
+* Remove code that makes suggest_gems_from_name give worse results. Pull
+  request [#8083](https://github.com/rubygems/rubygems/pull/8083) by
+  duckinator
+* Warning about PATH in `--user-install` mode is only necessary for gems
+  with executables. Pull request
+  [#8071](https://github.com/rubygems/rubygems/pull/8071) by
+  deivid-rodriguez
+* Installs bundler 2.5.21 as a default gem.
+
+_## Bug fixes:_
+
+* Fix error in one source when fetching dependency APIs clearing results
+  from all sources. Pull request
+  [#8080](https://github.com/rubygems/rubygems/pull/8080) by
+  deivid-rodriguez
+* Fix `gem cleanup` warning when two versions of psych installed. Pull
+  request [#8072](https://github.com/rubygems/rubygems/pull/8072) by
+  deivid-rodriguez
+
+
+SHA256 Checksums:
+
+* rubygems-3.5.21.tgz  
+  959b3e4886986975d85d0b02117790883e53b8d051529df6eacfe64745ef3160
+* rubygems-3.5.21.zip  
+  3992a92ae569abe8a48e031e86ab29c1615f18c6acbbbb50302c459e2b847185
+* rubygems-update-3.5.21.gem  
+  b18e55a3e7bb8f04ccefba8d0a6274f8b0bf56856c12d08f011aceccfbd7efc8
+
+
+[download]: https://rubygems.org/pages/download
+