Make kotlin sample work with Maven

Author: dsyer

samples/grpc-server-kotlin/build.gradle

@@ -4,8 +4,8 @@ plugins {
 	id 'io.spring.dependency-management' version '1.1.7'
 //    id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
-    id 'org.jetbrains.kotlin.jvm' version '2.1.20'
-    id 'org.jetbrains.kotlin.plugin.spring' version '2.1.20'
+    id 'org.jetbrains.kotlin.jvm' version '2.2.21'
+    id 'org.jetbrains.kotlin.plugin.spring' version '2.2.21'
 }
 
 group = 'com.example'

samples/grpc-server-kotlin/pom.xml

@@ -33,7 +33,7 @@
 		<protobuf-java.version>4.32.1</protobuf-java.version>
 		<grpc.version>1.76.0</grpc.version>
 		<grpc.kotlin.version>1.5.0</grpc.kotlin.version>
-		<kotlin.version>1.9.22</kotlin.version>
+		<kotlin.version>2.2.21</kotlin.version>
 	</properties>
 	<dependencyManagement>
 		<dependencies>
@@ -144,7 +144,7 @@
 			<plugin>
 				<groupId>io.github.ascopes</groupId>
 				<artifactId>protobuf-maven-plugin</artifactId>
-				<version>3.8.0</version>
+				<version>3.10.2</version>
 				<configuration>
 					<protocVersion>${protobuf-java.version}</protocVersion>
 					<binaryMavenPlugins>