build(deps): update pyproject-fmt requirement

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@1.3.0...1.8.0)

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

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

pyproject.toml

@@ -88,7 +88,7 @@ develop = [
   "black[jupyter]<25",
   "mypy<2",
   "poethepoet<1",
-  "pyproject-fmt>=1.3,<1.8",
+  "pyproject-fmt>=1.3,<1.9",
   "ruff<0.5",
   "validate-pyproject<0.17",
 ]