Fix: _cat/snapshots takes a repository in the query. #1687

Job	Run time
test-opensearch-spec (version=1.3.17, hub=opensearchproject, tests=default)	1m 29s
test-opensearch-spec (version=2.0.0, hub=opensearchproject, tests=default)	1m 16s
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)	52s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/ml)	1m 55s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=routing)	1m 15s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=snapshot)	51s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=dangling)	57s
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)	1m 0s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/notifications)	54s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/query_insights)	59s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/workload-management)	53s
test-opensearch-spec (version=2.18.0, hub=opensearchproject, tests=plugins/analysis)	1m 0s
test-opensearch-spec (version=2.19.0, hub=opensearchstaging, tests=default)	1m 45s
test-opensearch-spec (version=3.0.0, hub=opensearchstaging, tests=default)	1m 39s
merge-coverage	8s
	19m 25s

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