Prepare release v322 (heroku#1646)

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>

Author: heroku-linguist[bot]

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+
+## [v322] - 2025-09-29
+
 - Set `export PUMA_PERSISTENT_TIMEOUT=95` to match recommended router 2.0 settings for Rails applications (https://github.com/heroku/heroku-buildpack-ruby/pull/1645)
 - Warn when using Puma prior to 7.0.0 for Router 2.0 compatibility (https://github.com/heroku/heroku-buildpack-ruby/pull/1645)
 - Error when using Puma 7.0.0 to 7.0.2 (inclusive) to prevent runtime error with `PUMA_PERSISTENT_TIMEOUT` (https://github.com/heroku/heroku-buildpack-ruby/pull/1645)
@@ -1767,7 +1770,8 @@ 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/v321...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-ruby/compare/v322...main
+[v322]: https://github.com/heroku/heroku-buildpack-ruby/compare/v321...v322
 [v321]: https://github.com/heroku/heroku-buildpack-ruby/compare/v320...v321
 [v320]: https://github.com/heroku/heroku-buildpack-ruby/compare/v319...v320
 [v319]: https://github.com/heroku/heroku-buildpack-ruby/compare/v318...v319

…s/unreleased/persistent-timeout-rails.md …ngelogs/v322/persistent-timeout-rails.mdchangelogs/unreleased/persistent-timeout-rails.md renamed to changelogs/v322/persistent-timeout-rails.md changelogs/unreleased/persistent-timeout-rails.md renamed to changelogs/v322/persistent-timeout-rails.md

@@ -2,6 +2,6 @@
 
 module LanguagePack
   class LanguagePack::Base
-    BUILDPACK_VERSION = "v321"
+    BUILDPACK_VERSION = "v322"
   end
 end