Correct index settings types #1625

Job	Run time
test-opensearch-spec (version=1.3.17, hub=opensearchproject, tests=default)	1m 21s
test-opensearch-spec (version=2.0.0, hub=opensearchproject, tests=default)	1m 18s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=default)	1m 36s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/index_state_management)	55s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/ml)	1m 59s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=routing)	1m 17s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=snapshot)	56s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/replication)	56s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/streaming)	53s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/notifications)	51s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/query_insights)	51s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/workload-management)	1m 8s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/analysis)	1m 10s
test-opensearch-spec (version=2.19.0, hub=opensearchstaging, tests=default)	1m 34s
test-opensearch-spec (version=3.0.0, hub=opensearchstaging, tests=default)	1m 32s
merge-coverage	9s
	18m 26s

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