Upgrade to Gradle 9.3.0

Co-authored-by: xiang17 <9310587+xiang17@users.noreply.github.com>

Author: Copilot

buildSrc/build.gradle.kts

@@ -44,6 +44,6 @@ dependencies {
   implementation("gradle.plugin.io.morethan.jmhreport:gradle-jmh-report:0.9.6")
   implementation("me.champeau.jmh:jmh-gradle-plugin:0.7.3")
 
-  // earlier versions aren't compatible with Gradle 8.1.1
-  implementation("org.springframework.boot:spring-boot-gradle-plugin:2.5.12")
+  // Spring Boot 3.5+ is required for Gradle 9 compatibility
+  implementation("org.springframework.boot:spring-boot-gradle-plugin:3.5.10")
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

smoke-tests/apps/gRPC/build.gradle.kts

@@ -2,7 +2,7 @@ import com.google.protobuf.gradle.*
 
 plugins {
   id("ai.smoke-test-jar")
-  id("com.google.protobuf") version "0.8.19"
+  id("com.google.protobuf") version "0.9.6"
 }
 
 val grpcVersion = "1.26.0" // first version with support for arm64