Prepare release v246 (#1554)

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

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+
+## [v246] - 2024-03-25
+
 - Updated pip from 23.3.2 to 24.0. ([#1541](https://github.com/heroku/heroku-buildpack-python/pull/1541))
 - Updated setuptools from 68.2.2 to 69.2.0. ([#1553](https://github.com/heroku/heroku-buildpack-python/pull/1553))
 - Updated wheel from 0.42.0 to 0.43.0. ([#1550](https://github.com/heroku/heroku-buildpack-python/pull/1550))
@@ -974,7 +977,8 @@ Default Python is now latest 2.7.10. Updated Pip and Distribute.
 - Setuptools updated to v16.0
 - Pip updated to v7.0.1
 
-[unreleased]: https://github.com/heroku/heroku-buildpack-python/compare/v245...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-python/compare/v246...main
+[v246]: https://github.com/heroku/heroku-buildpack-python/compare/v245...v246
 [v245]: https://github.com/heroku/heroku-buildpack-python/compare/v244...v245
 [v244]: https://github.com/heroku/heroku-buildpack-python/compare/v243...v244
 [v243]: https://github.com/heroku/heroku-buildpack-python/compare/v242...v243