Compatibility updates for v2 in README (#6316) #22

Job	Run time
badger / badger (v1)	2m 6s
badger / badger (v2)	4m 18s
elasticsearch / elasticsearch 6.x v1	5m 35s
cassandra / cassandra-4.x v1 schema=manual	5m 53s
elasticsearch / elasticsearch 7.x v1	6m 0s
grpc / grpc (v1)	2m 13s
cassandra / cassandra-5.x v1 schema=manual	5m 54s
elasticsearch / elasticsearch 8.x v1	5m 59s
cassandra / cassandra-4.x v2 schema=manual	7m 50s
grpc / grpc (v2)	4m 39s
elasticsearch / elasticsearch 8.x v2	6m 56s
cassandra / cassandra-5.x v2 schema=manual	7m 59s
cassandra / cassandra-4.x v2 schema=auto	8m 8s
kafka / kafka v1	2m 28s
cassandra / cassandra-5.x v2 schema=auto	7m 54s
kafka / kafka v2	6m 41s
memory / memory-v2	4m 19s
opensearch / opensearch 1.x v1	5m 51s
opensearch / opensearch 2.x v1	6m 8s
opensearch / opensearch 2.x v2	6m 24s
	1h 53m 15s

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