Update pyproject-fmt requirement from <2.2 to <2.4

Updates the requirements on [pyproject-fmt](https://github.com/tox-dev/pyproject-fmt) to permit the latest version.
- [Release notes](https://github.com/tox-dev/pyproject-fmt/releases)
- [Commits](tox-dev/pyproject-fmt@0.1.0...2.3.0)

---
updated-dependencies:
- dependency-name: pyproject-fmt
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

setup.py

@@ -26,7 +26,7 @@
 develop_requires = [
     "mypy<1.12",
     "poethepoet<0.28",
-    "pyproject-fmt<2.2",
+    "pyproject-fmt<2.4",
     "ruff<0.5",
     "sphinx-autobuild==2021.3.14",  # Newer versions stopped "watching" appropriately?
     "validate-pyproject<0.19",