Update spring boot gradle plugin in smoke test image (#14488)

Author: laurit

smoke-tests/images/spring-boot/build.gradle.kts

@@ -5,18 +5,22 @@ plugins {
   id("otel.java-conventions")
 
   id("com.google.cloud.tools.jib")
-  id("org.springframework.boot") version "2.6.15"
+  id("org.springframework.boot") version "3.5.4"
 }
 
 dependencies {
-  implementation(platform("io.opentelemetry:opentelemetry-bom:1.0.0"))
+  implementation(platform("io.opentelemetry:opentelemetry-bom"))
   implementation(platform("org.springframework.boot:spring-boot-dependencies:2.6.15"))
 
   implementation("io.opentelemetry:opentelemetry-api")
   implementation(project(":instrumentation-annotations"))
   implementation("org.springframework.boot:spring-boot-starter-web")
 }
 
+otelJava {
+  minJavaVersionSupported = JavaVersion.VERSION_17
+}
+
 configurations.runtimeClasspath {
   resolutionStrategy {
     // requires old logback (and therefore also old slf4j)
@@ -25,18 +29,11 @@ configurations.runtimeClasspath {
   }
 }
 
-val targetJDK = project.findProperty("targetJDK") ?: "11"
+val targetJDK = project.findProperty("targetJDK") ?: "17"
 
 val tag = findProperty("tag")
   ?: DateTimeFormatter.ofPattern("yyyyMMdd.HHmmSS").format(LocalDateTime.now())
 
-java {
-  // needed by jib to detect java version used in project
-  // for jdk9+ jib uses an entrypoint that doesn't work with jdk8
-  sourceCompatibility = JavaVersion.VERSION_1_8
-  targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 springBoot {
   buildInfo {
   }

smoke-tests/images/spring-boot/src/main/resources/application.properties

@@ -2,4 +2,4 @@ spring.application.name=otel-spring-test-app
 
 logging.level.root=WARN
 logging.level.io.opentelemetry=INFO
-logging.pattern.console=%-5level [%t] %C{1.}: %msg trace_id=%X{trace_id}%n
+logging.pattern.console=%-5level [%t] %C: %msg trace_id=%X{trace_id}%n