Changelog for Rubygems version 3.6.4

Author: deivid-rodriguez

CHANGELOG.md

@@ -1,3 +1,17 @@
+# 3.6.4 / 2025-02-17
+
+## Enhancements:
+
+* Raise a simpler error when RubyGems fails to activate a dependency. Pull
+  request [#8449](https://github.com/rubygems/rubygems/pull/8449) by
+  deivid-rodriguez
+* Installs bundler 2.6.4 as a default gem.
+
+## Performance:
+
+* Allocate strings from Requirement match only once. Pull request
+  [#8245](https://github.com/rubygems/rubygems/pull/8245) by segiddins
+
 # 3.6.3 / 2025-01-16
 
 ## Enhancements: