Added 3.3.4 release announcement

Author: deivid-rodriguez

_posts/2021-12-29-3.3.4-released.md

@@ -0,0 +1,44 @@
+---
+title: 3.3.4 Released
+layout: post
+author: David Rodríguez
+author_email: deivid.rodriguez@riseup.net
+---
+
+RubyGems 3.3.4 includes enhancements, bug fixes and performance.
+
+To update to the latest RubyGems you can run:
+
+    gem update --system
+
+To install RubyGems by hand see the [Download RubyGems][download] page.
+
+
+_## Enhancements:_
+
+* Don't redownload `rubygems-update` package if already there. Pull
+  request #5230 by deivid-rodriguez
+* Installs bundler 2.3.4 as a default gem.
+
+_## Bug fixes:_
+
+* Fix `gem update --system` crashing when latest version not supported.
+  Pull request #5191 by deivid-rodriguez
+
+_## Performance:_
+
+* Make SpecificationPolicy autoload constant. Pull request #5222 by pocke
+
+
+SHA256 Checksums:
+
+* rubygems-3.3.4.tgz  
+  efbe846f26332c39bad90956189ad465b88736369f80399c85a716b4650b3834
+* rubygems-3.3.4.zip  
+  f5d7cd4e9547e715b4d97658ab87f8c225811c469b0c809970fd24d079f37bb2
+* rubygems-update-3.3.4.gem  
+  df98672e59c80628ebc2c5c5391675f23f1dbe37357998be44125b3a9dba21c5
+
+
+[download]: https://rubygems.org/pages/download
+