Bump pipenv from 2023.11.15 to 2023.12.1 (#1540)

* Bump pipenv from 2023.11.15 to 2023.12.1

Bumps [pipenv](https://github.com/pypa/pipenv) from 2023.11.15 to 2023.12.1.
- [Release notes](https://github.com/pypa/pipenv/releases)
- [Changelog](https://github.com/pypa/pipenv/blob/main/CHANGELOG.md)
- [Commits](pypa/pipenv@v2023.11.15...v2023.12.1)

---
updated-dependencies:
- dependency-name: pipenv
  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>

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Updated pip from 23.3.2 to 24.0. ([#1541](https://github.com/heroku/heroku-buildpack-python/pull/1541))
 - Updated setuptools from 68.2.2 to 69.2.0. ([#1553](https://github.com/heroku/heroku-buildpack-python/pull/1553))
 - Updated wheel from 0.42.0 to 0.43.0. ([#1550](https://github.com/heroku/heroku-buildpack-python/pull/1550))
+- Updated pipenv from 2023.11.15 to 2023.12.1. ([#1540](https://github.com/heroku/heroku-buildpack-python/pull/1540))
 
 ## [v245] - 2024-03-21
 

requirements/pipenv.txt

@@ -1 +1 @@
-pipenv==2023.11.15
+pipenv==2023.12.1