Bump poetry from 2.3.3 to 2.3.4 (#2079)

* Bump poetry from 2.3.3 to 2.3.4

Bumps [poetry](https://github.com/python-poetry/poetry) from 2.3.3 to 2.3.4.
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/main/CHANGELOG.md)
- [Commits](python-poetry/poetry@2.3.3...2.3.4)

---
updated-dependencies:
- dependency-name: poetry
  dependency-version: 2.3.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 
+- Updated Poetry from 2.3.3 to 2.3.4. ([#2079](https://github.com/heroku/heroku-buildpack-python/pull/2079))
 - Updated uv from 0.11.3 to 0.11.6. ([#2078](https://github.com/heroku/heroku-buildpack-python/pull/2078))
 
 ## [v342] - 2026-04-09

requirements/poetry.txt

@@ -1 +1 @@
-poetry==2.3.3
+poetry==2.3.4