Bump org.springframework.boot from 4.0.2 to 4.0.3

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v4.0.2...v4.0.3)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle.kts

@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    id("org.springframework.boot") version "4.0.2"
+    id("org.springframework.boot") version "4.0.3"
     id("io.spring.dependency-management") version "1.1.7"
     val kotlinVersion = "2.3.10"
     kotlin("jvm") version kotlinVersion