Bump slackapi/slack-github-action from 1.26.0 to 1.27.0 #8519

Job	Run time
benchmark-codspeed	14m 26s
check-unused-cargo-deps	1m 11s
doctests	2m 11s
integration-test-build (3.8)	7m 26s
rust-tests-platform (ubuntu)	3m 3s
style	2m 1s
rust-tests-platform (Windows)	8m 16s
test-imports-platform (ubuntu, 3.8)	2m 35s
test-imports-platform (Windows, 3.8)	4m 56s
unit-tests-with-coverage (3.8, py, 7.0.0, ubuntu-20.04)	6m 0s
unit-tests-with-coverage (3.8, py, 15.0.0, ubuntu-20.04)	10m 25s
unit-tests-with-coverage (3.8, ray, 15.0.0, ubuntu-20.04)	13m 56s
unit-tests-with-coverage (3.10, py, 15.0.0, ubuntu-20.04)	11m 6s
unit-tests-with-coverage (3.10, py, 15.0.0, windows-latest)	5m 29s
unit-tests-with-coverage (3.10, ray, 15.0.0, ubuntu-20.04)	14m 23s
unit-tests-with-coverage (3.10, ray, 15.0.0, windows-latest)	7m 20s
test-imports	1s
integration-test-iceberg (3.8, py)	3m 20s
integration-test-tpch (3.8, py)	1m 9s
integration-test-io (3.8, py)	7m 14s
integration-test-iceberg (3.8, ray)	3m 31s
integration-test-tpch (3.8, ray)	1m 17s
integration-test-io (3.8, ray)	7m 36s
integration-test-io-credentialed	0s
integration-test-sql (3.8, py)	2m 48s
integration-test-sql (3.8, ray)	3m 1s
rust-tests	1s
Publish coverage reports to CodeCov	8s
unit-tests	1s
integration-tests	1s
	2h 24m 52s

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