Update grpc-sample app (#425)

Author: Mr3zee

samples/grpc-app/build.gradle.kts

@@ -4,8 +4,7 @@
 
 plugins {
     kotlin("jvm") version "2.2.0"
-    id("org.jetbrains.kotlinx.rpc.plugin") version "0.8.0-grpc-79"
-    id("com.google.protobuf") version "0.9.5"
+    id("org.jetbrains.kotlinx.rpc.plugin") version "0.10.0-grpc-121"
 }
 
 group = "kotlinx.rpc.sample"
@@ -21,13 +20,12 @@ kotlin {
 }
 
 dependencies {
-    implementation("org.jetbrains.kotlinx:kotlinx-rpc-grpc-core:0.8.0-grpc-71")
+    implementation("org.jetbrains.kotlinx:kotlinx-rpc-grpc-core:0.10.0-grpc-121")
     implementation("ch.qos.logback:logback-classic:1.5.18")
     implementation("io.grpc:grpc-netty:1.73.0")
+    implementation("io.grpc:grpc-kotlin-stub:1.4.1")
 }
 
 rpc {
-    grpc {
-        enabled = true
-    }
+    grpc()
 }