Update ruff requirement from ~=0.6.1 to ~=0.6.4 (#461)

Updates the requirements on [ruff](https://github.com/astral-sh/ruff) to permit the latest version.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.6.1...0.6.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

dev-requirements.txt

@@ -11,7 +11,7 @@ mock~=5.1.0
 python-dotenv~=1.0.1
 
 # Format - Type checking.
-ruff~=0.6.1
+ruff~=0.6.4
 isort~=5.13.2
 pyright~=1.1.380
 typing-extensions~=4.12.2