Upgrade to Gradle 9.1.0

* Upgrade to `org.gretty:gretty:4.1.10`
* Fix build script for new syntax
* fix more revealed deprecation warnings

Author: artembilan

basic/tcp-client-server/src/test/java/org/springframework/integration/samples/tcpclientserver/TcpClientServerAnnotationDemoTest.java

@@ -31,12 +31,12 @@
 import org.springframework.integration.channel.DirectChannel;
 import org.springframework.integration.config.EnableIntegration;
 import org.springframework.integration.endpoint.AbstractEndpoint;
-import org.springframework.integration.ip.tcp.TcpInboundGateway;
-import org.springframework.integration.ip.tcp.TcpOutboundGateway;
 import org.springframework.integration.ip.tcp.connection.AbstractClientConnectionFactory;
 import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
 import org.springframework.integration.ip.tcp.connection.TcpNetClientConnectionFactory;
 import org.springframework.integration.ip.tcp.connection.TcpNetServerConnectionFactory;
+import org.springframework.integration.ip.tcp.inbound.TcpInboundGateway;
+import org.springframework.integration.ip.tcp.outbound.TcpOutboundGateway;
 import org.springframework.integration.ip.util.TestingUtilities;
 import org.springframework.integration.test.context.SpringIntegrationTest;
 import org.springframework.messaging.MessageChannel;

basic/zip/src/main/java/org/springframework/integration/samples/zip/SpringIntegrationUtils.java

@@ -26,8 +26,8 @@
 import org.springframework.beans.DirectFieldAccessor;
 import org.springframework.context.ApplicationContext;
 import org.springframework.expression.Expression;
-import org.springframework.integration.file.FileReadingMessageSource;
-import org.springframework.integration.file.FileWritingMessageHandler;
+import org.springframework.integration.file.inbound.FileReadingMessageSource;
+import org.springframework.integration.file.outbound.FileWritingMessageHandler;
 
 /**
  * Displays the names of the input and output directories.
@@ -56,7 +56,7 @@ public static void displayDirectories(final ApplicationContext context) {
 		List<String> inputDirectories = new ArrayList<>();
 
 		for (FileReadingMessageSource source : fileReadingMessageSources.values()) {
-			final File inDir = (File) new DirectFieldAccessor(source).getPropertyValue("directory");
+			final File inDir = (File) new DirectFieldAccessor(source).getPropertyValue("directoryExpression.value");
 			inputDirectories.add(inDir.getAbsolutePath());
 		}