Prepare release v0.5.1 (#324)

## heroku/go

- Added go1.24rc1 (linux-amd64), go1.24rc1 (linux-arm64).

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]
 
+## [0.5.1] - 2025-01-06
+
 - Added go1.24rc1 (linux-amd64), go1.24rc1 (linux-arm64).
+
 ## [0.5.0] - 2024-12-13
 
 - Now prefers processes set by Procfile, and no longer adds it's own processes if a Procfile is present.
@@ -202,7 +205,8 @@ 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/v0.5.0...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-go/compare/v0.5.1...HEAD
+[0.5.1]: https://github.com/heroku/buildpacks-go/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/heroku/buildpacks-go/compare/v0.4.7...v0.5.0
 [0.4.7]: https://github.com/heroku/buildpacks-go/compare/v0.4.6...v0.4.7
 [0.4.6]: https://github.com/heroku/buildpacks-go/compare/v0.4.5...v0.4.6

buildpacks/go/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/go"
-version = "0.5.0"
+version = "0.5.1"
 name = "Heroku Go"
 homepage = "https://github.com/heroku/buildpacks-go"
 description = "Heroku's buildpack for Go applications."