chore(ci): bump ubi8/ubi-minimal from `5c6982a` to `a47c89f` #469

Job	Run time
Test with Kafka 1.0.2 / Test with Kafka 1.0.2	6m 17s
Test with Kafka 2.6.2 / Test with Kafka 2.6.2	7m 10s
Test with Kafka 3.6.2 / Test with Kafka 3.6.2	7m 32s
Test with Kafka 3.8.1 / Test with Kafka 3.8.1	7m 17s
	28m 16s

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