Prepare release v298 (heroku#1573)

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]
 
+
+## [v298] - 2025-04-03
+
 - Added observability metrics (https://github.com/heroku/heroku-buildpack-ruby/pull/1569)
 
 ## [v297] - 2025-03-26
@@ -1656,7 +1659,8 @@ 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/v297...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-ruby/compare/v298...main
+[v298]: https://github.com/heroku/heroku-buildpack-ruby/compare/v297...v298
 [v297]: https://github.com/heroku/heroku-buildpack-ruby/compare/v296...v297
 [v296]: https://github.com/heroku/heroku-buildpack-ruby/compare/v295...v296
 [v295]: https://github.com/heroku/heroku-buildpack-ruby/compare/v294...v295

lib/language_pack/version.rb

@@ -2,6 +2,6 @@
 
 module LanguagePack
   class LanguagePack::Base
-    BUILDPACK_VERSION = "v297"
+    BUILDPACK_VERSION = "v298"
   end
 end