Test against Ruby 3.4 (#265) #615

Job	Run time
test-opensearch-faraday-1 (3.0)	2m 0s
test-opensearch (3.0)	2m 16s
test-opensearch-faraday-1 (3.4)	2m 2s
test-opensearch (3.1)	2m 5s
test-opensearch-faraday-1 (jruby-9.4)	2m 10s
test-opensearch-security (3.0)	1m 59s
test-opensearch (3.2)	2m 9s
test-opensearch (3.3)	3m 25s
test-opensearch-security (3.4)	2m 27s
test-opensearch (3.4)	2m 58s
test-opensearch-security (jruby-9.4)	1m 53s
test-opensearch (jruby-9.4)	3m 11s
	28m 35s

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