Sync with upstream v291

CHANGELOG.md

@@ -3,6 +3,14 @@
 ## [Unreleased]
 
 
+## [v291] - 2025-01-30
+
+- JRuby 9.4.11.0 is now available (https://github.com/heroku/heroku-buildpack-ruby/pull/1542)
+
+## [v290] - 2025-01-23
+
+- JRuby 9.4.10.0 is now available (https://github.com/heroku/heroku-buildpack-ruby/pull/1540)
+
 ## [v289] - 2025-01-17
 
 - Ruby 3.3.7 is now available (https://github.com/heroku/heroku-buildpack-ruby/pull/1538)
@@ -1620,7 +1628,9 @@ Bugfixes:
 * Change gem detection to use lockfile parser
 * use `$RACK_ENV` when thin is detected for rack apps
 
-[unreleased]: https://github.com/heroku/heroku-buildpack-ruby/compare/v289...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-ruby/compare/v291...main
+[v291]: https://github.com/heroku/heroku-buildpack-ruby/compare/v290...v291
+[v290]: https://github.com/heroku/heroku-buildpack-ruby/compare/v289...v290
 [v289]: https://github.com/heroku/heroku-buildpack-ruby/compare/v288...v289
 [v288]: https://github.com/heroku/heroku-buildpack-ruby/compare/v287...v288
 [v287]: https://github.com/heroku/heroku-buildpack-ruby/compare/v286...v287

changelogs/v290/jruby-9.4.10.0.md

@@ -0,0 +1,10 @@
+## JRuby version 9.4.10.0 is now available
+
+[JRuby v9.4.10.0](/articles/ruby-support-reference#ruby-versions) is now available on Heroku. To run
+your app using this version of Ruby, add the following `ruby` directive to your Gemfile:
+
+```ruby
+ruby "3.1.4", engine: "jruby", engine_version: "9.4.10.0"
+```
+
+The JRuby release notes can be found on the [JRuby website](https://www.jruby.org/news).

changelogs/v291/jruby-9.4.11.0.md

@@ -0,0 +1,10 @@
+## JRuby version 9.4.11.0 is now available
+
+[JRuby v9.4.11.0](/articles/ruby-support-reference#ruby-versions) is now available on Heroku. To run
+your app using this version of Ruby, add the following `ruby` directive to your Gemfile:
+
+```ruby
+ruby "3.1.4", engine: "jruby", engine_version: "9.4.11.0"
+```
+
+The JRuby release notes can be found on the [JRuby website](https://www.jruby.org/news).

lib/language_pack/version.rb

@@ -2,6 +2,6 @@
 
 module LanguagePack
   class LanguagePack::Base
-    BUILDPACK_VERSION = "v289"
+    BUILDPACK_VERSION = "v291"
   end
 end