Fix WebMvcConfigurationSupportTests due to change in previous commit

spring-webmvc/src/test/java/org/springframework/web/servlet/config/annotation/WebMvcConfigurationSupportTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -173,7 +173,7 @@ public class WebMvcConfigurationSupportTests {
 		ApplicationContext context = initContext(WebConfig.class);
 		RequestMappingHandlerAdapter adapter = context.getBean(RequestMappingHandlerAdapter.class);
 		List<HttpMessageConverter<?>> converters = adapter.getMessageConverters();
-		assertThat(converters.size()).isEqualTo(12);
+		assertThat(converters).hasSizeGreaterThanOrEqualTo(15);
 		converters.stream()
 				.filter(converter -> converter instanceof AbstractJackson2HttpMessageConverter)
 				.forEach(converter -> {