Added 4.0.8 release announcement

Author: hsbt

_posts/2026-03-11-4.0.8-released.md

@@ -0,0 +1,65 @@
+---
+title: 4.0.8 Released
+layout: post
+author: Hiroshi SHIBATA
+author_email: hsbt@ruby-lang.org
+---
+
+RubyGems 4.0.8 includes enhancements and documentation and Bundler 4.0.8 includes enhancements and bug fixes.
+
+To update to the latest RubyGems you can run:
+
+    gem update --system [--pre]
+
+To update to the latest Bundler you can run:
+
+    gem install bundler [--pre]
+    bundle update --bundler=4.0.8
+
+## RubyGems Release Notes
+
+
+### Enhancements:
+
+* Use JSON for cargo metadata parsing. Pull request
+  [#9373](https://github.com/ruby/rubygems/pull/9373) by hsbt
+* Fix NameError in Gem::Request.get_proxy_from_env when requiring
+  rubygems/request directly. Pull request
+  [#9362](https://github.com/ruby/rubygems/pull/9362) by afurm
+* Installs bundler 4.0.8 as a default gem.
+
+### Documentation:
+
+* Unify Compact Index API naming. Pull request
+  [#9372](https://github.com/ruby/rubygems/pull/9372) by simi
+
+
+## Bundler Release Notes
+
+
+### Enhancements:
+
+  - Add a new Bundler config to control how many specs are fetched [#9363](https://github.com/ruby/rubygems/pull/9363)
+  - Restrict GitHub Actions workflow permissions for newgem [#9361](https://github.com/ruby/rubygems/pull/9361)
+
+### Bug fixes:
+
+  - Fix plugin new version not registering [#9355](https://github.com/ruby/rubygems/pull/9355)
+
+
+## Manual Installation
+
+To install RubyGems by hand see the [Download RubyGems][download] page.
+
+SHA256 Checksums:
+
+* rubygems-4.0.8.tgz  
+  b18663def26384e467f2594bf27190c580771df0ca7ba444afa1d76609881813
+* rubygems-4.0.8.zip  
+  205198b7513521d2ba358e6b4df88924601be89b329d2b49fc0c0f55e41b167b
+* rubygems-update-4.0.8.gem  
+  3465eef02174a0bbad1f8d343eff67a33e7fc6eeb84cf69f1d1ca77ce565045c
+
+
+[download]: https://rubygems.org/pages/download
+