build(deps): bump pytest from 8.4.2 to 9.0.0 in /block-kit (#6)

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Author: dependabot[bot]

block-kit/requirements.txt

@@ -1,4 +1,4 @@
 mypy==1.18.2
-pytest==8.4.2
+pytest==9.0.0
 ruff==0.14.4
 slack_sdk==3.37.0