build(deps): bump ruff from 0.14.7 to 0.15.4 (#53)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.14.7 to 0.15.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.7...0.15.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -13,7 +13,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "pytest==8.4.2",
-    "ruff==0.14.7",
+    "ruff==0.15.4",
 ]
 
 [tool.setuptools.packages.find]

requirements.txt

@@ -6,6 +6,6 @@ slack-cli-hooks<1.0.0
 openai==2.24.0
 
 pytest==9.0.2
-ruff==0.14.14
+ruff==0.15.4
 python-dotenv==1.2.1
 slack-cli-hooks<1.0.0