Prepare release v0.5.0 (#321)

## heroku/go

- Now prefers processes set by Procfile, and no longer adds it's own processes if a Procfile is present.

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

buildpacks/go/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [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.
 
 ## [0.4.7] - 2024-12-06
@@ -199,7 +201,8 @@ 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/v0.4.7...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-go/compare/v0.5.0...HEAD
+[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
 [0.4.5]: https://github.com/heroku/buildpacks-go/compare/v0.4.4...v0.4.5

buildpacks/go/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/go"
-version = "0.4.7"
+version = "0.5.0"
 name = "Heroku Go"
 homepage = "https://github.com/heroku/buildpacks-go"
 description = "Heroku's buildpack for Go applications."