build(deps): bump ruff from 0.6.2 to 0.6.4 in /plugins/apel

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.6.2 to 0.6.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.6.2...0.6.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

plugins/apel/pyproject.toml

@@ -19,7 +19,7 @@ readme = "README.md"
 [project.optional-dependencies]
 style = [
       "black==24.8.0",
-      "ruff==0.6.2",
+      "ruff==0.6.4",
 ]
 tests = [
       "pytest==8.3.2",