fix(deps): update dependency io.camunda:zeebe-bom to v8.6.6 #2006

Job	Run time
build-start-form-springboot	26s
build-large-multi-instance-example	41s
build-synchronous-response-springboot	46s
build-twitter-review-java-springboot	49s
build-element-template-generation	4m 18s
build-async-service-task	1m 5s
build-parallel-operations	31s
build-payment-example-process-application	55s
build-react-tasklist	1m 1s
build-rollback-on-error-example	42s
build-timer-testing	3m 10s
build-zeebe-client-plain-java	23s
	14m 47s

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