Bump poetry from 2.3.4 to 2.4.0 (#564)

* Bump poetry from 2.3.4 to 2.4.0

Bumps [poetry](https://github.com/python-poetry/poetry) from 2.3.4 to 2.4.0.
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/main/CHANGELOG.md)
- [Commits](python-poetry/poetry@2.3.4...2.4.0)

---
updated-dependencies:
- dependency-name: poetry
  dependency-version: 2.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Add changelog entry

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ed Morley <501702+edmorley@users.noreply.github.com>

Author: dependabot[bot]

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Updated pip from 26.0.1 to 26.1.1. ([#563](https://github.com/heroku/buildpacks-python/pull/563))
+- Updated Poetry from 2.3.4 to 2.4.0. ([#564](https://github.com/heroku/buildpacks-python/pull/564))
 - Updated uv from 0.11.6 to 0.11.11. ([#562](https://github.com/heroku/buildpacks-python/pull/562))
 
 ## [6.4.1] - 2026-04-13

requirements/poetry.txt

@@ -1 +1 @@
-poetry==2.3.4
+poetry==2.4.0