Update ruff requirement from >=0.5.1,<0.6.4 to >=0.5.1,<0.6.8

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

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

pyproject.toml

@@ -79,7 +79,7 @@ swarm-models = "*"
 
 [tool.poetry.group.lint.dependencies]
 black = ">=23.1,<25.0"
-ruff = ">=0.5.1,<0.6.4"
+ruff = ">=0.5.1,<0.6.8"
 types-toml = "^0.10.8.1"
 types-pytz = ">=2023.3,<2025.0"
 types-chardet = "^5.0.4.6"