Prepare release v0.23.0 (#317)

## heroku/python

### Changed

- Updated Poetry from 1.8.5 to 2.0.1. ([#316](#316))

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

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.23.0] - 2025-01-13
+
 ### Changed
 
 - Updated Poetry from 1.8.5 to 2.0.1. ([#316](https://github.com/heroku/buildpacks-python/pull/316))
@@ -282,7 +284,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial implementation. ([#3](https://github.com/heroku/buildpacks-python/pull/3))
 
-[unreleased]: https://github.com/heroku/buildpacks-python/compare/v0.22.0...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-python/compare/v0.23.0...HEAD
+[0.23.0]: https://github.com/heroku/buildpacks-python/compare/v0.22.0...v0.23.0
 [0.22.0]: https://github.com/heroku/buildpacks-python/compare/v0.21.0...v0.22.0
 [0.21.0]: https://github.com/heroku/buildpacks-python/compare/v0.20.1...v0.21.0
 [0.20.1]: https://github.com/heroku/buildpacks-python/compare/v0.20.0...v0.20.1

buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/python"
-version = "0.22.0"
+version = "0.23.0"
 name = "Heroku Python"
 homepage = "https://github.com/heroku/buildpacks-python"
 description = "Heroku's buildpack for Python applications."