build(deps): bump ruff from 0.15.2 to 0.15.4 in /block-kit (#39)

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Author: dependabot[bot]

block-kit/requirements.txt

@@ -1,4 +1,4 @@
 mypy==1.19.1
 pytest==9.0.2
-ruff==0.15.2
+ruff==0.15.4
 slack_sdk==3.40.1