build(deps): bump ruff from 0.15.14 to 0.15.15 in /block-kit (#62)

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Author: dependabot[bot]

block-kit/requirements.txt

@@ -1,4 +1,4 @@
 mypy==2.1.0
 pytest==9.0.3
-ruff==0.15.14
+ruff==0.15.15
 slack_sdk==3.42.0