Tests

Update API from slack-api-ref@1ee282e (2025-05-07) #1594

Job	Run time
test (ruby=2.7, concurrency=async-websocket)	33s
test (ruby=3.1)	21s
test (ruby=3.0)	19s
test (ruby=3.3)	24s
test (ruby=2.7)	33s
test (ruby=3.4)	20s
test (ruby=jruby-head)	2m 38s
test (ruby=ruby-head)	20s
test (ruby=3.2)	21s
coveralls	6s
	5m 55s

Provide feedback