Fix GraalVM warnings

[ilopmar]

This PR fixes the following warnings during native image creation

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Warning: class initialization of class io.micronaut.configuration.kafka.health.$KafkaHealthIndicator$Definition failed with exception java.lang.NoClassDefFoundError: io/micronaut/management/health/indicator/HealthIndicator. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.health.$KafkaHealthIndicator$Definition to explicitly request delayed initialization of this class.
Warning: class initialization of class io.micronaut.configuration.kafka.tracing.$KafkaConsumerTracingInstrumentation$Definition failed with exception java.lang.NoClassDefFoundError: io/opentracing/Tracer. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.tracing.$KafkaConsumerTracingInstrumentation$Definition to explicitly request delayed initialization of this class.
Warning: class initialization of class io.micronaut.configuration.kafka.tracing.$KafkaProducerTracingInstrumentation$Definition failed with exception java.lang.NoClassDefFoundError: io/opentracing/Tracer. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.tracing.$KafkaProducerTracingInstrumentation$Definition to explicitly request delayed initialization of this class.
Warning: class initialization of class io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaConsumerTracingInstrumentation$Definition failed with exception java.lang.NoClassDefFoundError: brave/kafka/clients/KafkaTracing. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaConsumerTracingInstrumentation$Definition to explicitly request delayed initialization of this class.
Warning: class initialization of class io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaProducerTracingInstrumentation$Definition failed with exception java.lang.NoClassDefFoundError: brave/kafka/clients/KafkaTracing. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaProducerTracingInstrumentation$Definition to explicitly request delayed initialization of this class.
Warning: class initialization of class io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaTracingFactory$KafkaTracing0$Definition failed with exception java.lang.NoClassDefFoundError: brave/Tracing. This class will be initialized at run time because option --allow-incomplete-classpath is used for image building. Use the option --initialize-at-run-time=io.micronaut.configuration.kafka.tracing.brave.$BraveKafkaTracingFactory$KafkaTracing0$Definition to explicitly request delayed initialization of this class.
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