Bump pyproject-fmt from 2.5.1 to 2.6.0

Bumps [pyproject-fmt](https://github.com/tox-dev/toml-fmt) from 2.5.1 to 2.6.0.
- [Release notes](https://github.com/tox-dev/toml-fmt/releases)
- [Commits](tox-dev/toml-fmt@pyproject-fmt/2.5.1...pyproject-fmt/2.6.0)

---
updated-dependencies:
- dependency-name: pyproject-fmt
  dependency-version: 2.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -55,7 +55,7 @@ optional-dependencies.dev = [
     "pygments==2.19.1",
     "pylint==3.3.7",
     "pylint-per-file-ignores==1.4.0",
-    "pyproject-fmt==2.5.1",
+    "pyproject-fmt==2.6.0",
     "pyright==1.1.400",
     "pyroma==4.2",
     "pytest==8.3.5",