remove reflection code

closes gh-2402

Signed-off-by: Emanuel Trandafir <emanueltrandafir1993@gmail.com>

Author: etrandafir93

spring-cloud-contract-verifier/src/main/java/org/springframework/cloud/contract/verifier/messaging/noop/NoOpContractVerifierAutoConfiguration.java

@@ -20,6 +20,7 @@
 import java.util.concurrent.TimeUnit;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import org.apache.avro.specific.SpecificRecordBase;
 import org.jspecify.annotations.Nullable;
 import tools.jackson.databind.json.JsonMapper;
 
@@ -100,17 +101,15 @@ public ContractVerifierObjectMapper contractVerifierObjectMapper(
 	}
 
 	@Configuration(proxyBeanMethods = false)
-	@ConditionalOnClass(name = "org.apache.avro.specific.SpecificRecordBase")
+	@ConditionalOnClass(SpecificRecordBase.class)
 	public static class AvroContractVerifierObjectMapperConfiguration {
 
 		@Bean
 		@ConditionalOnMissingBean
 		public ContractVerifierObjectMapper avroContractVerifierObjectMapper(
 				ObjectProvider<JsonMapper> jsonMapper) throws ClassNotFoundException {
 			JsonMapper mapper = jsonMapper.getIfAvailable(JsonMapper::new).rebuild()
-					.addMixIn(
-							Class.forName("org.apache.avro.specific.SpecificRecordBase"),
-							IgnoreAvroMixin.class).build();
+					.addMixIn(SpecificRecordBase.class, IgnoreAvroMixin.class).build();
 			return new ContractVerifierObjectMapper(mapper);
 		}