Update spring-rabbit latestDep tests for 4.0 (#15436)

Author: jaydeluca

instrumentation/spring/spring-rabbit-1.0/javaagent/build.gradle.kts

@@ -12,6 +12,8 @@ muzzle {
   }
 }
 
+val latestDepTest = findProperty("testLatestDeps") as Boolean
+
 dependencies {
   library("org.springframework.amqp:spring-rabbit:1.0.0.RELEASE")
 
@@ -24,9 +26,9 @@ dependencies {
   // spring-retry is required by org.springframework.amqp:spring-rabbit:4.0.0
   testLibrary("org.springframework.retry:spring-retry")
 
-  // tests don't work with spring boot 4 yet
-  latestDepTestLibrary("org.springframework.boot:spring-boot-starter:3.+") // documented limitation
-  latestDepTestLibrary("org.springframework.boot:spring-boot-starter-test:3.+") // documented limitation
+  if (latestDepTest) {
+    testLibrary("org.springframework.boot:spring-boot-starter-amqp:latest.release")
+  }
 }
 
 tasks {
@@ -36,8 +38,6 @@ tasks {
   }
 }
 
-val latestDepTest = findProperty("testLatestDeps") as Boolean
-
 // spring 6 requires java 17
 if (latestDepTest) {
   otelJava {