Bump ruff from 0.1.15 to 0.6.9

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.1.15 to 0.6.9.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.1.15...0.6.9)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pyproject.toml

@@ -24,7 +24,7 @@ simplejson = "^3.19.2"
 [tool.poetry.dev-dependencies]
 pytest = "^7.4.3"
 tox = "^3.25.0"
-ruff = "^0.1.3"
+ruff = "^0.6.9"
 singer-sdk = { version=">=0.28,<0.39", extras = ["testing"] }
 types-simplejson = "^3.19.0.1"
 types-setuptools = "^69.2.0.20240317"