PYIC-7476: Suppress circular dependency warning from Sonar

Sonar got upset about a circular dependency between the Event interface
and the ExitNestedJourneyEvent implementation.

The interface references the implementation due to how we instructr
Jackson to determine which classes to deserialise into. No idea why it
suddenly has an issue with it...

lambdas/process-journey-event/src/main/java/uk/gov/di/ipv/core/processjourneyevent/statemachine/events/Event.java

@@ -9,6 +9,7 @@
 
 import java.util.Map;
 
+@SuppressWarnings({"javaarchitecture:S7027"}) // Circular dependency with implementations
 @JsonTypeInfo(use = JsonTypeInfo.Id.DEDUCTION)
 @JsonSubTypes({
     @JsonSubTypes.Type(value = BasicEvent.class),