upgrade embedded cassandra to 5.0.3 #1399

Job	Run time
Build	1m 0s
Checkstyle	2m 31s
Spotless	1m 56s
Unit Tests	2m 27s
Dataflow Templates Integration Smoke Tests	1m 41s
Dataflow Templates Integration Tests	38m 40s
Dataflow Templates Load Tests	0s
	48m 15s

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