Use Hikari Connection Pool for handling Clickhouse connections #1054

Job	Run time
build-kafka-lightweight / build	3m 4s
java-tests-kafka / java-kafka	13m 1s
testflows-lightweight / testflows-lightweight	10m 45s
java-tests-lightweight / java-lightweight	10m 45s
testflows-kafka / testflows-kafka	10m 45s
testflows-lightweight / testflows-lightweight-replicated	10m 40s
	59m 0s

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