Prepare release v0.1.15 (#213)

## heroku/go

- Added go1.22rc2.

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

buildpacks/go/CHANGELOG.md

@@ -7,7 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.1.15] - 2024-02-06
+
 - Added go1.22rc2.
+
 ## [0.1.14] - 2024-01-16
 
 - Added go1.20.13, go1.21.6.
@@ -111,7 +114,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial implementation using libcnb.rs. ([#1](https://github.com/heroku/buildpacks-go/pull/1))
 
-[unreleased]: https://github.com/heroku/buildpacks-go/compare/v0.1.14...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-go/compare/v0.1.15...HEAD
+[0.1.15]: https://github.com/heroku/buildpacks-go/compare/v0.1.14...v0.1.15
 [0.1.14]: https://github.com/heroku/buildpacks-go/compare/v0.1.13...v0.1.14
 [0.1.13]: https://github.com/heroku/buildpacks-go/compare/v0.1.12...v0.1.13
 [0.1.12]: https://github.com/heroku/buildpacks-go/compare/v0.1.11...v0.1.12

buildpacks/go/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.9"
 
 [buildpack]
 id = "heroku/go"
-version = "0.1.14"
+version = "0.1.15"
 name = "Heroku Go"
 homepage = "https://github.com/heroku/buildpacks-go"
 description = "Heroku's buildpack for Go applications."