build(deps): bump ruff from 0.15.17 to 0.15.18 in /ai/slackbot-mcp-client/no-auth (#77)

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ai/slackbot-mcp-client/no-auth/requirements.txt

@@ -2,7 +2,7 @@ httpx2==2.4.0
 mcp==1.28.0
 mypy==2.1.0
 pytest==9.1.1
-ruff==0.15.17
+ruff==0.15.18
 slack_bolt==1.28.0
 slack_cli_hooks==0.3.0
 slack_sdk==3.42.0