chore(deps): update plugin org.springframework.boot to v4.0.2

Ref: PACT-445

Author: pactflow-renovate-bot[bot]

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-  id 'org.springframework.boot' version '4.0.1'
+  id 'org.springframework.boot' version '4.0.2'
   id 'io.spring.dependency-management' version '1.1.7'
   id 'java'
 }