build(deps): bump ruff

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.16.3 to 0.16.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.16.3...0.16.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.16.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

ai/slackbot-mcp-client/rich-responses/mcp-apps/requirements.txt

@@ -2,7 +2,7 @@ httpx2==2.12.0
 mcp==2.0.0
 mypy==2.3.1
 pytest==9.1.1
-ruff==0.16.3
+ruff==0.16.4
 slack_bolt==1.30.0
 slack_cli_hooks==0.3.0
 slack_sdk==3.43.0