Prepare release v1.0.0 (#11)

## heroku/release-phase

- No changes.

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

buildpacks/release-phase/CHANGELOG.md

@@ -6,3 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [1.0.0] - 2024-10-23
+
+- No changes.
+
+[unreleased]: https://github.com/heroku/buildpacks-release-phase/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/heroku/buildpacks-release-phase/releases/tag/v1.0.0

buildpacks/release-phase/buildpack.toml

@@ -2,7 +2,7 @@ api = "0.10"
 
 [buildpack]
 id = "heroku/release-phase"
-version = "0.2.0"
+version = "1.0.0"
 name = "Heroku Release Phase"
 description = "Enhances Release Phase with support for multiple, ordered release commands and release-build command."