chore(deps-dev): Update pyproject-flake8 requirement

Updates the requirements on [pyproject-flake8](https://github.com/csachs/pyproject-flake8) to permit the latest version.
- [Release notes](https://github.com/csachs/pyproject-flake8/releases)
- [Commits](csachs/pyproject-flake8@v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: pyproject-flake8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -45,7 +45,7 @@ test = [
     "flake8-import-order>=0.18.2,<0.19.0",
     "flake8-print>=5.0.0,<6.0.0",
     "flake8-quotes>=3.3.2,<4.0.0",
-    "pyproject-flake8>=6.0.0,<7.0.0",
+    "pyproject-flake8>=6.0.0,<8.0.0",
     "mypy>=1.1.1,<2.0.0",
     "typing-extensions>=4.5.0,<5.0.0",
     "pytest>=7.2.2,<8.0.0",