Tests

Update API from slack-api-ref@3ec3c10 (2025-02-08) #1393

Job	Run time
test (ruby=2.7)	30s
test (ruby=2.7, concurrency=async-websocket)	36s
test (ruby=3.0)	18s
test (ruby=3.1)	28s
test (ruby=3.2)	19s
test (ruby=3.3)	20s
test (ruby=ruby-head)	19s
test (ruby=jruby-head)	1m 53s
coveralls	2s
	4m 45s

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