chore(cubestore): Downgrade rdkafka version to 0.29.0 (#8996) #18993

Job	Run time
latest-tag-sha	23s
Build & Test :dev for Debian without pushing	18m 27s
lint	3m 52s
build-cubestore	5m 57s
build	7m 14s
unit (20.x)	6m 31s
unit (22.x)	6m 35s
docker-image-latest-set-tag	5s
integration-cubestore (20.x)	5m 21s
integration-smoke (20.x)	11m 24s
integration (20.x, clickhouse)	3m 56s
integration (20.x, druid)	3m 54s
integration (20.x, elasticsearch)	3m 27s
integration (20.x, mssql)	4m 0s
integration (20.x, mysql)	4m 36s
integration (20.x, postgres)	3m 42s
integration (20.x, prestodb)	3m 42s
integration (20.x, mysql-aurora-serverless)	3m 30s
integration (20.x, crate)	3m 9s
integration (20.x, mongobi)	3m 14s
	1h 42m 59s

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