Tests

Update API from slack-api-ref@1ee282e (2025-04-11) #1542

Job	Run time
test (ruby=2.7, concurrency=async-websocket)	44s
test (ruby=2.7)	35s
test (ruby=3.1)	23s
test (ruby=3.0)	26s
test (ruby=ruby-head)	28s
test (ruby=3.4)	29s
test (ruby=jruby-head)	2m 52s
test (ruby=3.3)	32s
test (ruby=3.2)	27s
coveralls	3s
	6m 59s

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