Remove public modifier from referenced configurations in auto-configurations

Closes gh-47715

module/spring-boot-amqp/src/main/java/org/springframework/boot/amqp/autoconfigure/RabbitAutoConfiguration.java

@@ -141,7 +141,7 @@ public final class RabbitAutoConfiguration {
 
 		@Bean
 		@ConditionalOnMissingBean
-		public RabbitTemplateConfigurer rabbitTemplateConfigurer(RabbitProperties properties,
+		RabbitTemplateConfigurer rabbitTemplateConfigurer(RabbitProperties properties,
 				ObjectProvider<MessageConverter> messageConverter,
 				ObjectProvider<RabbitTemplateRetrySettingsCustomizer> retrySettingsCustomizers) {
 			RabbitTemplateConfigurer configurer = new RabbitTemplateConfigurer(properties);
@@ -153,7 +153,7 @@ public final class RabbitAutoConfiguration {
 		@Bean
 		@ConditionalOnSingleCandidate(ConnectionFactory.class)
 		@ConditionalOnMissingBean(RabbitOperations.class)
-		public RabbitTemplate rabbitTemplate(RabbitTemplateConfigurer configurer, ConnectionFactory connectionFactory,
+		RabbitTemplate rabbitTemplate(RabbitTemplateConfigurer configurer, ConnectionFactory connectionFactory,
 				ObjectProvider<RabbitTemplateCustomizer> customizers) {
 			RabbitTemplate template = new RabbitTemplate();
 			configurer.configure(template, connectionFactory);
@@ -165,7 +165,7 @@ public final class RabbitAutoConfiguration {
 		@ConditionalOnSingleCandidate(ConnectionFactory.class)
 		@ConditionalOnBooleanProperty(name = "spring.rabbitmq.dynamic", matchIfMissing = true)
 		@ConditionalOnMissingBean
-		public AmqpAdmin amqpAdmin(ConnectionFactory connectionFactory) {
+		AmqpAdmin amqpAdmin(ConnectionFactory connectionFactory) {
 			return new RabbitAdmin(connectionFactory);
 		}
 
@@ -179,7 +179,7 @@ public final class RabbitAutoConfiguration {
 
 		@Bean
 		@ConditionalOnSingleCandidate(RabbitTemplate.class)
-		public RabbitMessagingTemplate rabbitMessagingTemplate(RabbitTemplate rabbitTemplate) {
+		RabbitMessagingTemplate rabbitMessagingTemplate(RabbitTemplate rabbitTemplate) {
 			return new RabbitMessagingTemplate(rabbitTemplate);
 		}
 

module/spring-boot-jdbc/src/main/java/org/springframework/boot/jdbc/autoconfigure/EmbeddedDataSourceConfiguration.java

@@ -47,7 +47,7 @@ public class EmbeddedDataSourceConfiguration implements BeanClassLoaderAware {
 	}
 
 	@Bean(destroyMethod = "shutdown")
-	public EmbeddedDatabase dataSource(DataSourceProperties properties) {
+	EmbeddedDatabase dataSource(DataSourceProperties properties) {
 		EmbeddedDatabaseType type = EmbeddedDatabaseConnection.get(this.classLoader).getType();
 		String databaseName = properties.determineDatabaseName();
 		Assert.state(type != null, "'type' must not be null");

module/spring-boot-jetty/src/main/java/org/springframework/boot/jetty/autoconfigure/JettyWebServerConfiguration.java

@@ -40,7 +40,7 @@ public class JettyWebServerConfiguration {
 
 	private final JettyServerProperties jettyProperties;
 
-	public JettyWebServerConfiguration(JettyServerProperties jettyProperties) {
+	JettyWebServerConfiguration(JettyServerProperties jettyProperties) {
 		this.jettyProperties = jettyProperties;
 	}
 

module/spring-boot-web-server/src/main/java/org/springframework/boot/web/server/autoconfigure/reactive/ReactiveWebServerConfiguration.java

@@ -52,7 +52,7 @@ import org.springframework.web.server.adapter.ForwardedHeaderTransformer;
 public class ReactiveWebServerConfiguration {
 
 	@Bean
-	public ReactiveWebServerFactoryCustomizer reactiveWebServerFactoryCustomizer(ServerProperties serverProperties,
+	ReactiveWebServerFactoryCustomizer reactiveWebServerFactoryCustomizer(ServerProperties serverProperties,
 			ObjectProvider<SslBundles> sslBundles) {
 		return new ReactiveWebServerFactoryCustomizer(serverProperties, sslBundles.getIfAvailable());
 	}
@@ -60,7 +60,7 @@ public class ReactiveWebServerConfiguration {
 	@Bean
 	@ConditionalOnMissingBean
 	@ConditionalOnProperty(name = "server.forward-headers-strategy", havingValue = "framework")
-	public ForwardedHeaderTransformer forwardedHeaderTransformer() {
+	ForwardedHeaderTransformer forwardedHeaderTransformer() {
 		return new ForwardedHeaderTransformer();
 	}
 
@@ -68,7 +68,7 @@ public class ReactiveWebServerConfiguration {
 	 * Registers a {@link WebServerFactoryCustomizerBeanPostProcessor}. Registered via
 	 * {@link ImportBeanDefinitionRegistrar} for early registration.
 	 */
-	public static class BeanPostProcessorsRegistrar implements ImportBeanDefinitionRegistrar, BeanFactoryAware {
+	static class BeanPostProcessorsRegistrar implements ImportBeanDefinitionRegistrar, BeanFactoryAware {
 
 		private @Nullable ConfigurableListableBeanFactory beanFactory;