chore(deps): update plugin org.springframework.boot to v3

.github/renovate.json5

@@ -28,12 +28,6 @@
       "matchPackagePrefixes": ["com.google.protobuf"],
       "groupName": "protobuf packages"
     },
-    {
-      // intentionally using Spring Boot 2 in some examples
-      "matchPackageNames": ["org.springframework.boot"],
-      "matchUpdateTypes": ["major"],
-      "enabled": false
-    },
     {
       // intentionally using Java 11 in some examples
       // not using matchUpdateTypes "major", because renovate wants to bump "11-jre" to "11.0.19_7-jre"

javaagent/build.gradle.kts

@@ -3,18 +3,12 @@ import org.springframework.boot.gradle.tasks.bundling.BootJar
 
 plugins {
     id("java")
-    id("org.springframework.boot") version "2.7.18"
+    id("org.springframework.boot") version "3.3.5"
 }
 
 description = "OpenTelemetry Example for Java Agent"
 val moduleName by extra { "io.opentelemetry.examples.javagent" }
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(8))
-    }
-}
-
 val agent = configurations.create("agent")
 val extension = configurations.create("extension")
 

micrometer-shim/build.gradle.kts

@@ -3,18 +3,12 @@ import org.springframework.boot.gradle.tasks.run.BootRun
 
 plugins {
     id("java")
-    id("org.springframework.boot") version "2.7.18"
+    id("org.springframework.boot") version "3.3.5"
 }
 
 description = "OpenTelemetry Example for Micrometer Shim"
 val moduleName by extra { "io.opentelemetry.examples.micrometer-shim" }
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(8))
-    }
-}
-
 val bootRun = tasks.named<BootRun>("bootRun") {
     mainClass = "io.opentelemetry.example.micrometer.Application"
 }

telemetry-testing/build.gradle.kts

@@ -4,18 +4,12 @@ import org.springframework.boot.gradle.tasks.run.BootRun
 
 plugins {
     id("java")
-    id("org.springframework.boot") version "2.7.18"
+    id("org.springframework.boot") version "3.3.5"
 }
 
 description = "OpenTelemetry Example for Telemetry Testing"
 val moduleName by extra { "io.opentelemetry.examples.telemetry-testing" }
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(11))
-    }
-}
-
 val bootRun = tasks.named<BootRun>("bootRun") {
     mainClass = "io.opentelemetry.example.javagent.Application"
 }
@@ -37,7 +31,7 @@ dependencies {
     testImplementation(enforcedPlatform("org.junit:junit-bom:5.11.3"))
     testImplementation("org.junit.jupiter:junit-jupiter-api")
     testImplementation("org.junit.jupiter:junit-jupiter-engine")
-    testImplementation("org.mock-server:mockserver-netty:5.15.0:shaded")
+    testImplementation("org.mock-server:mockserver-netty:5.15.0")
     testImplementation("org.awaitility:awaitility:4.2.2")
     testImplementation("io.opentelemetry.proto:opentelemetry-proto:1.3.2-alpha")
     testImplementation("org.assertj:assertj-core:3.26.3")

telemetry-testing/src/test/java/io/opentelemetry/example/telemetry/ApplicationTest.java

@@ -28,7 +28,7 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.web.client.TestRestTemplate;
-import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.boot.test.web.server.LocalServerPort;
 
 /**
  * The role of this class is to test the telemetry. It only works if the opentelemetry java agent is