jspecify changes in the aot package

Author: sobychacko

Diff for: spring-kafka/src/main/java/org/springframework/kafka/aot/KafkaAvroBeanRegistrationAotProcessor.java

@@ -56,8 +56,7 @@ public class KafkaAvroBeanRegistrationAotProcessor implements BeanRegistrationAo
 	private static final boolean AVRO_PRESENT = ClassUtils.isPresent(AVRO_GENERATED_CLASS_NAME, null);
 
 	@Override
-	@Nullable
-	public BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
+	public @Nullable BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
 		if (!AVRO_PRESENT) {
 			return null;
 		}

Diff for: spring-kafka/src/main/java/org/springframework/kafka/aot/package-info.java

@@ -1,6 +1,5 @@
 /**
  * Provides classes to support Spring AOT.
  */
-@org.springframework.lang.NonNullApi
-@org.springframework.lang.NonNullFields
+@org.jspecify.annotations.NullMarked
 package org.springframework.kafka.aot;