Fix minor spec failures for updated gems #248

Job	Run time
rubocop	26s
check_version	0s
yard	23s
test (2.4, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 2s
test (2.5, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 8s
test (2.6, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 4s
test (2.7, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	59s
test (3.0, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	48s
test (jruby-head, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 20s
test (truffleruby-head, 4, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 15s
test (2.7, 3, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 5s
test (2.7, 4, opensearch-ruby:1.0.1, opensearchproject/opensearch:1.0.1)	1m 3s
test (2.7, 4, elasticsearch:7.13.3, elasticsearch:7.13.4)	1m 8s
test (2.7, 5, opensearch-ruby:2.1.0, opensearchproject/opensearch:2.2.1)	1m 0s
test (2.3, 4, elasticsearch:7.5.0, elasticsearch:7.13.4)	1m 0s
release	0s
	13m 41s

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