Prepare release v0.2.2 (#199)

## heroku/dotnet

### Added

- The buildpack will now restore .NET tools when a tool manifest file is detected. ([#194](#194))

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

buildpacks/dotnet/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.2] - 2025-02-12
+
 ### Added
 
 - The buildpack will now restore .NET tools when a tool manifest file is detected. ([#194](https://github.com/heroku/buildpacks-dotnet/pull/194))
@@ -107,7 +109,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial implementation.
 
-[unreleased]: https://github.com/heroku/buildpacks-dotnet/compare/v0.2.1...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-dotnet/compare/v0.2.2...HEAD
+[0.2.2]: https://github.com/heroku/buildpacks-dotnet/compare/v0.2.1...v0.2.2
 [0.2.1]: https://github.com/heroku/buildpacks-dotnet/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/heroku/buildpacks-dotnet/compare/v0.1.10...v0.2.0
 [0.1.10]: https://github.com/heroku/buildpacks-dotnet/compare/v0.1.9...v0.1.10

buildpacks/dotnet/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/dotnet"
-version = "0.2.1"
+version = "0.2.2"
 name = "Heroku .NET"
 homepage = "https://github.com/heroku/buildpacks-dotnet"
 description = "Heroku's buildpack for .NET applications."