Prepare release v2.7.0 (#442)

## heroku/python

### Added

- Added support for Python 3.14. ([#439](#439))

### Changed

- The Python 3.13 version alias now resolves to Python 3.13.8. ([#440](#440))
- The Python 3.12 version alias now resolves to Python 3.12.12. ([#441](#441))
- The Python 3.11 version alias now resolves to Python 3.11.14. ([#441](#441))
- The Python 3.10 version alias now resolves to Python 3.10.19. ([#441](#441))
- The Python 3.9 version alias now resolves to Python 3.9.24. ([#441](#441))

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

Author: heroku-linguist[bot]

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.7.0] - 2025-10-09
+
 ### Added
 
 - Added support for Python 3.14. ([#439](https://github.com/heroku/buildpacks-python/pull/439))
@@ -467,7 +469,8 @@ 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/v2.6.0...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-python/compare/v2.7.0...HEAD
+[2.7.0]: https://github.com/heroku/buildpacks-python/compare/v2.6.0...v2.7.0
 [2.6.0]: https://github.com/heroku/buildpacks-python/compare/v2.5.1...v2.6.0
 [2.5.1]: https://github.com/heroku/buildpacks-python/compare/v2.5.0...v2.5.1
 [2.5.0]: https://github.com/heroku/buildpacks-python/compare/v2.4.5...v2.5.0

buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/python"
-version = "2.6.0"
+version = "2.7.0"
 name = "Heroku Python"
 homepage = "https://github.com/heroku/buildpacks-python"
 description = "Heroku's buildpack for Python applications."