Prepare release v0.2.0 (#113)

## heroku/php

### Added

- Add PHP/8.3, update PHP runtimes, extensions, Composers, web servers (#104)
- Support Ubuntu 24.04 (and, as a result, Heroku-24 and `heroku/builder:24`)
- Support `arm64` CPU architecture (Ubuntu 24.04 / Heroku-24 only)

### Changed

- Use Buildpack API 0.10 (requires `lifecycle` 0.17 or newer)
- `buildpack.toml` declaration of `[[stacks]]` has been replaced with `[[targets]]`, currently supporting Ubuntu 20.04 and 22.04 (both `amd64`)
- Bump versions of Composer and minimal PHP for bootstrapping to 2.7.6 and 8.3.7

### Fixed

- Strings should be allowed as values in `scripts` object in `composer.json` ([#90](#90))

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

buildpacks/php/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.0] - 2024-06-04
+
 ### Added
 
 - Add PHP/8.3, update PHP runtimes, extensions, Composers, web servers (#104)
@@ -35,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial implementation
 
-[unreleased]: https://github.com/heroku/buildpacks-php/compare/v0.1.2...HEAD
+[unreleased]: https://github.com/heroku/buildpacks-php/compare/v0.2.0...HEAD
+[0.2.0]: https://github.com/heroku/buildpacks-php/compare/v0.1.2...v0.2.0
 [0.1.2]: https://github.com/heroku/buildpacks-php/compare/v0.1.1...v0.1.2
 [0.1.1]: https://github.com/heroku/buildpacks-php/releases/tag/v0.1.1

buildpacks/php/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/php"
-version = "0.1.2"
+version = "0.2.0"
 name = "Heroku PHP"
 homepage = "https://github.com/heroku/buildpacks-php"
 description = "Heroku's buildpack for PHP applications."